/^zyz f23 Walsh Philosophy Collection PRESENTED ^orte LIBRARIES of the UNIVERSITY o/TORONTO OUTLINES OF COSMIC PHILOSOPHY IN FOUR VOLUMES VOLUME III OUTLINES OF COSMIC PHILOSOPHY BASED ON THE DOCTRINE OF EVOLUTION, WITH CRITICISMS ON THE POSITIVE PHILOSOPHY BY JOHN FISKE WITH AN INTRODUCTION BY JOSIAH ROYCE L^univers, pour qui saurait Pembrasser (Tun seul point de vue, ne strait, s'ilest permis de le dire, qu'unfait unique et une grande vkrite. — D'Alembert Kai rh '6Kov rovro Sia TOUTa K6(T/xov KaXovffiv, ovk aKoa/jiiav. — Plato IN FOUR VOLUMES. —VOLUME IIL BOSTON AND NEW YORK HOUGHTON, MIFFLIN AND COMPANY 1903 OUTLINES OF COSMIC PHILOSOPHY BASED ON THE DOCTRINE OF EVOLUTION, WITH CRITICISMS ON THE POSITIVE PHILOSOPHY BY JOHN FISKE WITH AN INTRODUCTION BY JOSIAH ROYCE L^univers, Pour qui saurait V embrasser cfun seul point de vue, ne seraity s'ilest pertnis de le dire, qu'unfait unique et une grande vSrite. — D'Alembert Kai rh '6Kov rovro Siii. Tuvra K6(r fiov KaKovffiv, ovK aKocpiav. — Plato IN FOUR VOLUMES. —VOLUME IIL BOSTON AND NEW YORK HOUGHTON, MIFFLIN AND COMPANY 1903 COPYRIGHT 1874 BY JOHN FISKE COPYRIGHT 1902 BY ABBY M. FISKE, EXECXTFRIX ALL RIGHTS RESERVED • CONTENTS PART II. SYNTHESIS (Continued) CHAPTER PAGB X. NATURAL SELECTION .... 3 XI. TWO OBJECTIONS CONSIDERED . . 46 XII. ADJUSTMENT, DIRECT AND INDIRECT . 72 XIII. LIFE AS ADJUSTMENT . . . . 97 XIV. LIFE AND MIND . . . . .106 XV. THE COMPOSITION OF MIND . . 14a XVI. THE EVOLUTION OF MIND . . .194 XVII. SOCIOLOGY AND FREE-WILL ... 241 XVIII. THE EVOLUTION OF SOCIETY . . .280 XIX. ILLUSTRATIONS AND CRITICISMS . , 330 OUTLINES OF COSMIC PHILOSOPHY PART II SYNTHESIS {continued) ** Die Thatigkeit des Organismus ist bestimmt durch seine Receptivitat und umgekehrt. Weder seine Thatigkeit noch seine Receptivitat ist an sich etwas reelles, Realitat erlangen beide nur in dieser Wechselbestimmung. Thatigkeit und Receptivitat entstehen also zugleich in einem und demselben untheilbaren Moment, und nur dieses Simultaneitat von Thatigkeit und Re- ceptivitat constituirt das Leben. In den entgegengesetzten Richtungen, die durch diese Entgegensetzung entstehen, liegt das Princip fiir die Construc- tion aller Lebenserscheinungen. " — Schelling, Enter Enttuurf. 1799. CHAPTER X NATURAL SELECTION * IN that most delightful of printed books, the " Conversations of Goethe with Eckermann and Soretj" there is an amusing anecdote which shows how distinctly the great master real- ized the importance of the question of the ori- gin of species. The news of the French Revo- lution of July, 1830, had just reached Weimar and set the whole town in commotion. In the course of the afternoon, says Soret, " I went around to Goethe's. * Now,' exclaimed he to me, as I entered, ' what do you think of this great event ? The volcano has come to an eruption ; everything is in flames, and we have no longer a transaction with closed doors ! ' ' Terrible afl^air,' said I, ' but what could be ex- pected under such outrageous circumstances, and with such a ministry, otherwise than that the whole would end with the expulsion of the royal family ? * ' My good friend,' gravely returned Goethe, * we seem not to understand each other. ^ [See Introduction, § 18. Compare with this chapter the essay I. in Darwinism and Other Essays, on *« Darwinism Verified.''] 3 COSMIC PHILOSOPHY I am not speaking of those creatures there, but of something quite different. I am speaking of the contest, so important for science, between Cuvier and Geoffroy Saint-Hilaire, which has just come to an open rupture in the French Academy ! * " At this unexpected turn of the subject poor Soret knew not what to say, and for some minutes, he tells us, his thoughts were quite at a standstill. The anecdote well illustrates the immeasurable superiority of Goethe over Comte in prophetic insight into the bearings of the chief scientific question of the immediate future. While Comte was superciliously setting aside the problem of man's origin, as a problem not only insoluble but utterly devoid of philosophic value even if it could be solved, the great German poet and philosopher was welcoming the outbreak of this famous contest on questions of pure morpho- logy, as conducive to the speedy triumph of the development theory, for which he himself had so long been waging battle. But events were hastening that triumph even more rapidly than Goethe could have anticipated. In December, 1 83 1, only a few weeks before Goethe was laid in the grave, Mr. Darwin set out upon that voyage around the world, in the course of which he fell in with the facts which suggested his the- ory of the origin of species. The history of the investigation is a memorable one, — worth not- 4 NATURAL SELECTION ing for the illustration it gives of the habits of a truly scientific mind. On his return to Eng- land, in 1837, Mr. Darwin began patiently to collect all kinds of facts which might be of use in the solution of the problem, — " How is organic evolution caused ? " It was only after seven years of unremitting labour that he went so far as to commit to manuscript a brief sketch of his general conclusions, of which the main points were communicated to his friends Sir Charles Lyell and Dr. Hooker. A less wise and sober speculator than Mr. Darwin would now at once have rushed into print. A thinker less thoroughly imbued with the true scientific spirit would probably have suffered from not publish- ing his views, and profiting by the adverse crit- icisms of contemporary observers. It is a strik- ing illustration of Mr. Darwin's patience and self-restraint that he continued fifteen years longer to work assiduously in testing the weak and strong points of his theory, before present- ing it to the public. And it is an equally inter- esting illustration of his thoroughly scientific temperament that, after so many years of soli- tary labour, he should have been so little carried away by the fascinations of his own hypothesis as to foresee clearly all the more valid objections which might be urged against it. After a care- ful perusal of the recent literature of the sub- ject, and especially of the skilful work of Mr. 5 COSMIC PHILOSOPHY St. George Mivart, it still seems to me that the weightiest objections which have yet been brought to bear on the Darwinian theory are to be found in chapters vi.-ix. of Mr. Darwin's own work, where they are elaborately and in most cases conclusively answered. To such a marvellous instance of candour, patience, and sobriety, united with the utmost boldness of speculation, the history of science can show but few parallels. In 1858 a fortunate circumstance caused Mr. Darwin to break his long silence, and to give to the public an exposition of the results of his researches. Mr. Wallace, who had been for sev- eral years engaged in studying the natural his- tory of the Malay Archipelago, had arrived at views concerning the origin of species quite sim- ilar to Mr. Darwin's, and in 1858 he sent Mr. Darwin an essay on the subject, which in August of the same year was published in the Journal of the Linnaean Society. Sir Charles Lyell and Dr. Hooker now earnestly advised Mr. Dar- win to publish his own views ; and in 1859 the memorable treatise on the " Origin of Species '* was given to the world. It would, however, be incorrect to rate Mr. Wallace's merits, in the discovery of the law of natural selection, so high as Mr. Darwin's. They do not stand on precisely the same level, like Adams and Leverrier with reference to the 6 NATURAL SELECTION discovery of the planet Neptune. Mr. Wallace, indeed, thought out independently all the es- sential points of the theory, and stated it in a way which showed that he understood its wide- reaching importance ; but being a much younger man than Mr. Darwin, and having begun the investigation at a much later date, he by no means worked it out so elaborately. Nor is it likely that, with an equal length of time at his command, he could have succeeded in produ- cing a work comparable in scientific calibre to the " Origin of Species." His lately published collection of essays, while showing unusual pow- ers of observation and rare acuteness in the ap- plication of his theory to certain special classes of phenomena, nevertheless furnishes convin- cing proof that in breadth and depth of scientific attainment, as well as in philosophic capacity, he is very far inferior to his great coadjutor. In his preface, indeed, Mr. Wallace hastens to ac- knowledge, with a modest self-appreciation as rare as it is admirable, and especially rare in such cases, that his strength would have been quite unequal to the task which Mr. Darwin has ac- complished. As Professor Haeckel somewhere observes, it was quite fortunate for the progress of science that Mr. Darwin received such a stimulus to the publication of his theory ; since otherwise he might perhaps have gone on several years 7 COSMIC PHILOSOPHY longer, observing and experimenting in seclu- sion. The almost immediate acquiescence of the majority of naturalists in Mr. Darwin's views shows that in 1859 the scientific world was fully prepared for them. The flimsiness of the spe- cial creation hypothesis was more or less clearly perceived by a large number of biologists, who were only withheld from committing themselves to the derivation theory by the circumstance that no satisfactory explanation of the process of development had been propounded. No one had assigned an adequate cause for such a phe- nomenon as the gradual evolution of a new species ; and sundry attempts w^hich had been made in this direction were so obviously futile as to excite both distrust and ridicule. Lamarck, for example, placing an exaggerated stress upon an established law of biology, contended that " desires, by leading to increased actions of mo- tor organs, may induce further development of such organs,'* and that, consequently, animals may become directly adapted through structural changes to changes in their environment. We shall see, as we continue the discussion, that such directly adaptive changes really take place ; but Lamarck ill understood their character, and in- deed could not have been expected to under- stand it, since in his day dynamical biology was in its earliest infancy.^ By insisting on volition ^ Lamarck also tried to explain organic development meta- 8 NATURAL SELECTION as a chief cause of adaptive change, the illustri- ous naturalist not only left the causes of vege- table variation unexplained, but even in the zoological department laid open the way for malicious misrepresentations which the unin- structedzeal of theological adversaries has gladly transferred to the account of Mr. Darwin. Some time ago a clergyman in New York, lecturing about Darwinism, sarcastically alluded to " the bear which took to swimming, and so became a whale." Had this worthy person condescended to study the subject about which he thought himself fit to enlighten the public, he would soon have discovered that his funny remark is not even a parody upon any opinion held by Mr. Darwin. In so far as it is applicable to any opinion ever held by a scientific writer, it may perhaps be accepted as a parody, though at best a very far-fetched and feeble one, of the hypo- thesis of Lamarck. It is now time to explain what the Darwinian theory is. At the outset we may observe that while it is a common error to speak of Mr. Darwin as if he were the originator of the de- rivation theory, the opposite error is not un- frequently committed of alluding to him as if he had contributed nothing to the establishment of that theory save the doctrine of natural se- physically, as the continuous manifestation of an <* inherent tendency " toward perfection. 9 COSMIC PHILOSOPHY lection. Mr. Mivart habitually thus alludes to him. In fact, however, Mr. Darwin^s merits are twofold. He was the first to marshal the arguments from classification, embryology, mor- phology, and distribution, and thus fairly to establish the fact that there has been a deriva- tion of higher forms from lower ; and he was also the first to point out the modus operandi of the change. The first of these achievements by itself would have entitled him to associate his name with the development theory ; though it was only by the second that the triumph of the theory was practically assured. Just as, in as- tronomy, the heliocentric theory was not re- garded as completely established until the forces which it postulated were explained as identical with forces already known, so the development theory possessed comparatively little value as a working hypothesis so long as it still remained doubtful whether there were any known or knowable causes sufficient to have brought about the phenomena which that theory assumed to have taken place. It was by pointing out ade- quate causes of organic evolution that Mr. Dar- win established the development theory upon a thoroughly scientific basis. As Lyell explained all past geologic phe- nomena as due to the slow action of the same forces which are still in action over the earth*s surface and beneath its crust, so Mr. Darwin, lO NATURAL SELECTION in explaining the evolution of higher from lower forms of life, appeals only to agencies which are still visibly in action. Whether spe- cies, in a state of nature, are changing or not at the present time, cannot be determined by di- rect observation, any more than the motion of the hour-hand of a clock could be detected by gazing at it for one second.^ The entire period which has elapsed since men began to observe nature systematically is but an infinitesimal por- tion of the period requisite for any fundamen- tal alteration in the characteristics of a spe- cies. But there are innumerable cases in which species are made to change rapidly through the deliberate intervention of man. In the course of a few thousand years, a great number of varieties of plants and animals have been pro- duced under domestication, many of which ^ ** If we imagine mankind to be contemplated by some creature as short-lived as an ephemeron, but possessing intelli- gence like our own — if we imagine such a being studying men and women, during his few hours of life, and speculating as to the mode in which they came into existence ; it is manifest that, reasoning in the usual way, he would suppose each man and woman to have been separately created. No appreciable changes of structure occurring during the few hours over which his observations extended, this being would probably infer that no changes of structure were taking place, or had taken place ; and that from the outset, each man and woman had possessed all the characters then visible — had been originally formed with them. This would naturally be the first impression,'* Spencer, Principles of Biology, vol. i. p. 338. II COSMIC PHILOSOPHY differ so widely from their parent-forms that, if found in a state of nature, they would be un- hesitatingly classified as distinct species, and sometimes as distinct genera. Modifications in the specific characters of domesticated organisms are the only ones which take place so rapidly that we can actually observe them ; and it there- fore becomes highly important to inquire what is the agency which produces these modifica- tions. That agency is neither more nor less than selection^ taking advantage of that slight but uni- versal variation in organisms implied by the fact that no two individuals in any species are exactly alike. If man, for example, wishes to produce a breed of fleet race-horses, he has only to take a score of horses and select from these the fleetest to pair together : from among the offspring of these fleet pairs he must again select the fleetest ; and thus, in a few genera- tions, he will obtain horses whose average speed far exceeds that of the fleetest of their undo- mesticated ancestors. It is in this and no other way that our breeds of race-horses have been produced. In this way too have been produced the fine wools of which our clothing is made. By selecting, generation after generation, the sheep with the finest and longest wool, a breed of sheep is ultimately reared with wool almost generically different from that of the undomes- 12 NATURAL SELECTION ticated race. In this and no other way have the different races of dogs — the greyhound, the mastiff, the terrier, the pointer, and the white- haired Eskimo — been artificially developed from two or three closely allied varieties of the wolf and jackal. The mastiff and bloodhound are more than ten times as large as the terrier, and, if found in a state of nature, they would perhaps be classed in distinct genera, like the leopard and panther, whose differences are hardly more striking. Yet the ancestral races from which these dogs have been reared differed but slightly from each other. The different breeds of dogs vary in the number of their toes, teeth, and vertebrae, in the number and disposition of their mammae, in the shape of their zygomatic arches, and in the position of their occiputs ; although dogs have not been selected with re- ference to these peculiarities, about which un- instructed men neither know nor care, but only with reference to their speed, fleetness, strength, or sagacity. In the case of domestic pigeons, where man has been to a great extent actuated by pure fancy in his selections, the divergences are still more remarkable. All domestic pigeons are descended from a single species of wild pigeon — yet their differences, even in bony structure, in the, internal organs, and in mental disposition, are such as characterize distinct genera, and to describe them cojnpletely would ?3 COSMIC PHILOSOPHY require a large volume. Pigs, . rabbits, cows, fowl, silk-moths, and hive-bees furnish no less instructive evidence ; and the development of the peach and the almond from a common stock, and of countless varieties of apple from the sour crab, may be cited, out of a hundred examples, to show what prodigies artificial se- lection has accomplished in the modification of vegetal organisms. Now Mr. Darwin's great achievement has been to show that a similar process of selection, going on throughout the organic world without the knowledge or intervention of man, tends not only to maintain but to produce adaptive alterations in plants and animals. The process is a simple one, when once we have the clew to it. All plants and animals tend to increase in a high geometrical ratio. The old problem of the nails in the horse's shoe teaches us what an astounding affair is a geometrical rate of in- crease ; but when we consider the reproductive capacity of insects and plants, the nails in the horse's shoe are left nowhere. When Arctic travellers tell us that the minute protococcus multiplies so fast as to colour blood-red many acres of snow in a single night, such a rate of increase appears astonishing. But It is a mere trifle compared to what would happen if repro- duction were to go on unchecked. Let us take the ^ase of a plant which yields one hundred 14 NATURAL SELECTION seeds yearly, and suppose each of these seeds to reach maturity so as to yield its hundred off- spring in the following year : in the tenth year the product would be one hundred quintillions ^ of adult plants ! As this is one of those figures before which the imagination stands hopelessly baffled, let us try the effect of an illustration. Supposing each of these plants to be from three to five inches in length, so that about twenty thousand would reach nearly an English mile, the total length of the number just mentioned would be equal to five million times the radius of the earth^s orbit. The ray of light, which travels from the sun to the earth in eight min- utes, would be seventy-six years in passing along this line of little plants ! And in similar wise it might be shown of many insects, crustaceans, and fishes, that their unchecked reproduction could not long go on without requiring the as- similation of a greater quantity of matter than is contained in the whole solar system. We may now begin dimly to realize how prodigious is the slaughter which unceasingly goes on throughout the organic world. For obviously, when a plant like the one just cited maintains year by year a tolerable uniformity in its numbers, it does so only because on the average ninety-nine seeds perish prematurely ^ According to the American system of numeration. One hundred thousand trillions, according to the EngHsh system. 15 COSMIC PHILOSOPHY for one that survives long enough to produce other seeds. A single codfish has been known to lay six million eggs within a year. If these eggs were all to become adult codfishes, and the multiplication were to continue at this rate for three or four years, the ocean would not afford room for the species. Yet we have no reason to suppose that the race of codfishes is actually increasing in numbers to any notable extent. With the codfish, as with animal spe- cies in general, the numbers during many suc- cessive generations oscillate about a point which is fixed, or moves but slowly forward or back- ward. Instead of a geometrical increase with a ratio of six millions, there is practically no marked increase at all. Now this implies that out of the six million embryo codfish a suffi- cient number will survive to replace their two parents, and to replace a certain small propor- tion of those contemporary codfishes who leave no progeny. Perhaps a dozen may suffice for this, perhaps a hundred. The rest of the six million must die. We may thus understand what is meant by the " struggle for existence." Battles far more deadly than those of Gettys- burg or Gravelotte have been incessantly waged on every square mile of the earth's life-bearing surface, since life first began. It is only thus that the enormous increase of each species has been kept within bounds. Of the many oflf- i6 NATURAL SELECTION spring produced by each plant and animal, save in the case of those highest in the scale, but few attain maturity and leave offspring behind them. The most perish for want of sustenance, or are slain to furnish food for other organisms. There is thus an unceasing struggle for life — a competition for the means of subsistence — going on among all plants and animals. In this struggle by far the greater number suc- cumb without leaving offspring — but a few favoured ones in each generation survive and propagate to their offspring the qualities by virtue of which they have survived. Thus we see what is meant by " Natural Selection." The organisms which survive and propagate their kind are those which are best adapted to the conditions in which they live ; so that we may, by a legitimate use of metaphor, personify Nature as a mighty breeder, selecting from each generation those individuals which are fleetest, strongest, most sagacious : lions with supplest muscles, moths with longest antennae, mollusks with hardest shells, wolves with keen- est scent, bees with surest instinct, flowers with sweetest nectar ; until, in the course of untold ages, the numberless varieties of organic life have been produced by the same process of which man now takes advantage in order to produce variations to suit his own caprices. Between natural selection and selection by VOL. in 17 COSMIC PHILOSOPHY man there is, however, one important differ- ence. Selection by man tends to produce vari- eties adapted to satisfy human necessities or inclinations, and it has no direct reference to the maintenance of the species. Such abnor- mities as the pouter and tumbler pigeons could not be sustained in a state of nature — and hence, when domesticated animals are turned loose, they are apt to revert to something like their ancestral type,^ else they are exterminated by races better adapted to wild life. But nat- ural selection, working with the sternest of methods, saves from the general slaughter only those individuals which can best take care of themselves, and thus maintains each species in adaptation to its environment. The wonderful harmonies in the organic world, which a crude philosophy explained as the achievement of creative contrivance, are therefore due to the continued survival of the fittest and the con- tinued slaughter of the less adapted plants and animals. Now if the geography and meteorology of the earth were ever-constant, if the nature of the soil, the amount of moisture, the density of the atmosphere, and the intensity of solar radiance were everywhere to remain forever un- 1 This fact, which has often been alleged by superficial critics as an obstacle to the Darwinian theory, is thus in reality implied by that theory. i8 NATURAL SELECTION altered, and if each race of plants and animals were always to remain confined to one limited area, the survival of the fittest would simply maintain unaltered any given aspect of the be- ings constituting the organic world. All vari- ations on either side of the well-adjusted mean would be incessantly cut off by natural selection, and species would be immutable. It is need- less to say that no such state of things has ever existed. Constant change has been the order of things ever since our planet first became fit to support organic life. No part of the earth*s surface is now, or ever has been, at rest. Con- tinents are rising and sinking, seas are growing deeper and shallower, soils are constantly alter- ing in chemical composition, rivers are ever changing their beds, solar radiance is ever gain- ing or losing in intensity, according to the earth's ever-varying position in space, the den- sity and moisture of the air are continually in- creasing and diminishing, and every species of plant and animal is continually pressing upon the limits of the area within which it is confined. All these changes are going on to-day, and have been going on during millions of ages. Though so slight as to be recognized only by the most careful observation during the period covered by human history, these changes have during longer periods sufficed to submerge every con- tinent and perhaps to make dry land of every 19 COSMIC PHILOSOPHY sea and ocean on the face of the globe. They have raised mountains like the Andes and the Himalayas at the rate of a few inches per cen- tury ; they have converted extensive tropical swamps into the desert of Sahara ; they have repeatedly covered Europe and North America with glaciers ; and they have hidden beneath solid rocks vast treasures of carbon stealthily purloined from the dense atmosphere of an older age. Since such changes have ever been going on, it follows that organisms have been unable to remain constant and live. A race of animals or plants in which no individuals ever varied would sooner or later inevitably be exterminated, leav- ing no progeny to fill its place. Observation shows, however, that there is no such race. The members of each species are ever slightly varying, but, so long as the environment re- mains constant, natural selection prevents the variations from accumulating on either side of the mean which is most advantageous to the species. When the environment changes, if certain variations on one side of the established mean tend to bring the individuals which man- ifest them into closer adaptation to the new en- vironment, these individuals will survive in the struggle for life, and thus the average character of the species will be slightly altered. No two bears have just the same amount of hair, no 20 NATURAL SELECTION two moths have just the same length of pro- boscis, no two antelopes are exactly matched in fleetness. Now if increasing cold renders a thicker covering useful to the bear, or if the lengthening of a flower-calyx, due to a slight change in soil or quantity of sunlight, renders a longer proboscis useful to the moth, or if the immigration of a carnivorous animal makes it ne- cessary for antelopes often to run for their lives, then in each generation the thickest - coated bears, the longest-tongued moths, and the fleet- est antelopes will survive. Every individual variation in the direction of a heavier coat, a longer sucker, or a structure better adapted for fleeing will give its owner the advantage in the incessant struggle for life, and these peculiari- ties will be oftenest inherited, while individuals which do not vary, or which vary in tue wrong direction, will have to migrate or die.^ The student of natural history, who realizes, however dimly, the prodigious complexity of the relations of the various species of animals and plants to each other, will perceive that the amount of variation thus preserved and en- hanced must in the course of long ages become 1 It is thus one of the great merits of the theory of natural selection, that it accounts for the phenomena o^ extinction of species, — which formerly could only be accounted for by the gratuitous and utterly indefensible hypothesis of periodical catastrophes or cataclysms. 21 COSMIC PHILOSOPHY enormous. If a grain of sand were each year added to an ant-heap, it would in course of time become as large as Chimborazo. But these changes, directly caused by natural selection, are greatly aided and emphasized by other changes indirectly produced by correlation of growth, and also by what is called the law of use and disuse. By correlation of growth, or internal equilibration, we mean the effect pro- duced upon any part of the organism by change in a related or neighbouring part. Let us sup- pose that it becomes advantageous to some feHne animal, like the ancestor of the lion, to have large and powerful jaws. Since no two of our leonines would have jaws of exactly the same size and strength, natural selection would preserve all the strong-jawed individuals, while the weak-jawed individuals would succumb in the struggle for life. In the course of many generations our race of leonines would possess on the average much larger and stronger jaws than at the period at which we began to con- sider it. But greater weight of jaw entails in- creased exertion of the muscles which move the jaw, so that these muscles, receiving more and more blood, will become permanently increased in size and power. The portions of the skull into which the jaw bones fit will likewise receive an extra strain, and will consequently increase in rate of nutrition and grow to a larger size, so 22 NATURAL SELECTION that the shape of the whole head will be altered. This increased weight of the head, and the in- creasingly violent activity of the muscles which move the jaws, entails a greater strain upon the vertebrae which support the head, and upon the cervical muscles which move it from side to side. The heightened nutrition of these bones and muscles will add to their weight, so that the shoulders and chest will be affected. There will be a tightening of the tendons, and proba- bly a pergsptible alteration in the relative lengths of the different bones and muscles throughout the anterior part of the body ; and these changes, altering the animal's centre of gravity, will in- evitably cause other compensating changes in the rest of the body. The legs, shoulders, and haunches will be modified. Alterations in the weights bearing upon the chest will affect the growth of the lungs and the aeration of the blood. And the stomach, intestines, and va- rious secreting glands will respond to the re- quirements of all these nutritive changes. While, lastly, such deep-seated variations cannot fail to influence the nervous system of the animal, and to modify somewhat its temperament and its modes of life. To illustrate the effects of use and disuse, let us reconsider the antelopes, of whom natural selection has so long preserved the swiftest and most quickly frightened individuals that they 23 COSMIC PHILOSOPHY now rank among the fleetest and most timid of mammals. If all the lions and other swift car- nivora of Africa were to become extinct, so that antelopes would no longer have to run for their lives, the slower and less easily alarmed indi- viduals would begin to be preserved in as great numbers as the swifter and more timid ones, so that by and by the average speed and timidity of the race would be diminished. In all this we see merely the effects wrought by unaided natural selection. But it is a fundamental law of biology that functions are maintained at their maximum only through constant exercise. Freed from savage enemies, our antelopes would less frequently use the muscles con- cerned in running, and would less often exer- cise the mental faculties concerned in the rapid perception of approaching danger. Inevitably, therefore, they would, after several generations, diminish in speed, and become less alert and less timid. Here we see the effects of what is called the law of use and disuse. But to these we should also have to add the effects of correlation of growth. Decrease in speed involving decrease in muscular tonicity, and rendering possible the assimilation of less concentrated food, would seriously modify the nutrition of the entire or- ganism. The digestive tract would probably be enlarged, and larger and lazier bodies could not fail to be produced, both by |the direct in- 24 NATURAL SELECTION fluence of the nutritive processes, and because natural selection would no longer necessitate the slaughter of all clumsy bodied individuals. Thus in course of time the breed of antelopes would become so thoroughly altered as to con- stitute a distinct species from their graceful, swift, and timid ancestors. It is in just these ways that New Zealand birds, freed by insular isolation from the attacks of mammalian ene- mies, have grown large and clumsy, and have lost the power of flight which their partly- aborted wings show that they once possessed. By the same kind of illustration we may form a rough notion of the way in which a sin- gle species bifurcates into two well-defined spe- cies. Suppose a race of ruminants to have been living in Africa before the introduction of car- nivora, and suppose that, for sundry reasons, the vitality of the race was but little afi^ected by moderate variations in the sizes of its individ- uals, so that while some were comparatively light and nimble, others were comparatively large and clumsy. Now introducing upon the scene the common ancestor of the lion and the leopard — by immigration either from Asia or from some other adjacent territory now sub- merged — let us note some probable features of the complex result. First, as regards the attacked ruminants, it is likely that in course of time the lightest and swiftest individuals, • 25 COSMIC PHILOSOPHY habitually taking refuge in flight, would have greatly increased both in fleetness and in tim- idity ; the largest and most clumsy of the species, unable to save themselves by fleeing, would often be forced to stand and fight for their lives, and would thus ultimately have gained in size, strength, and courage ; while those who were neither nimble enough to get out of the way nor strong enough to fight suc- cessfully would have all been killed off. And thus, after a while, by perpetual destruction of the means and preservation of the extremes, we should get two kinds of ruminant as diflFerent from one another as the antelope which es- capes by his fleetness and cautious timidity, and the bufi^alo which boldly withstands the lion and not unfrequently conquers or repulses him. Secondly, let us observe what must have been going on all the while with the attacking carnivora. The lighter and less powerful of these would find manifest advantage in crouch- ing amid dense foliage and springing down upon unwary victims passing below. The larger and more powerful individuals would more fre- quently roam about the open country, attack- ing the larger ruminants and giving chase to the nimbler ones, and would thus increase in strength and fleetness. And thus there would be initiated such difl^erences of size and habit as characterize the leopard and the lion. 26 . NATURAL SELECTION It must be borne in mind that this is a purely hypothetical illustration, which does not pre- tend to give a complete account of the complex process. I have no idea that the differentiation between antelopes and buffaloes, or between lions and leopards, was accomplished in any such straightforward way as this. But while unduly simplifying the case, the illustration is undoubt- edly sound in principle. No doubt the lion is so strong and so swift because only the strong- est and swiftest lions have been able to prey at once upon buffaloes and upon antelopes. No doubt the antelope is so swift and so timid because only the swiftest and most quickly frightened antelopes have been enabled to get away from the lion, and to propagate their kind. And no doubt in the process above de- scribed, we get a partial glimpse of some of the essential incidents in the past careers of these races. All the foregoing illustrations unite in enfor- cing the conclusion that the direct and indirect effects of natural selection are by no means lim- ited to slight or superficial changes in organ- isms. The student of physiology well knows that no change, however seemingly trivial, which ensures the survival of the organism in its fierce struggle for existence, can fail in the long run to entail so many other changes as to modify, more or less perceptibly, the entire structure. 27 COSMIC PHILOSOPHY Even such a slight change as an increased thick- ness of the woolly coat of a mammal may, by altering the excretory power of the skin, affect the functions of the lungs, liver, and kidneys, and thus indirectly increase or diminish the size of the animal, which in turn will modify its speed, its muscular development, its mental fac- ulties, and its habits of life. Having thus briefly indicated the capacity of the theory of natural selection for explaining the most general phenomena of organic variation, let us in conclusion observe how admirably it explains certain special phenomena, which do not otherwise admit of scientific explanation. For evidence of the signal success with which Mr. Darwin has explained such otherwise un- accountable facts as the dimorphism of cer- tain flowers, the existence of neuters or sterile females among bees and ants, the odoriferous glands in mammals, the calcareous shells of mollusks, the heavy carapace of the tortoise, the humps of the camel, the amazingly complicated contrivances through which orchidaceous plants are fertilized by insects, the slave-making in- stinct of certain ants, the horns of male rumi- nants, and countless other phenomena, — for all this, I must refer to Mr. Darwin's various works. From the mass of phenomena to which the theory of natural selection has been satisfac- torily applied, I will only select as an illustra- 28 NATURAL SELECTION tion the case of colour, in the animal and vege- tal kingdoms. Until after the publication of Mr. Darwin's speculations, the colours of plants and animals had never been made the subject of careful and philosophical study. So far as any hypothesis was held concerning these phenomena, it was the vaguely conceived hypothesis that they are due to the direct action of such physical conditions as climate, soil, or food. But there are fatal objections to such an explanation. When Dr. Forbes Winslow, in his work on the " Physio- logical Influence of Light," tells us that " the white colour of animals inhabiting the polar re- gions is attributable to the absence of intense sunlight," it is an obvious objection that the polar regions are not preeminent for darkness. Though within the limits of the arctic circle the sun is below the horizon for six months together, it is none the less for the other six months above the horizon ; and though its slanting rays do not cause excessive heat in the summer, the prolonged glare of light, intensified by reflection from the snow and ice, is described as peculiarly intolerable. The summer ought to tan the polar bears as much as the winter can bleach them. And to this it may be added that the Eskimos and Greenlanders, living under the polar circle, are not bleached. Several other facts, ahke incompatible with the direct action 29 COSMIC PHILOSOPHY of physical agencies, are mentioned by Mr. Wallace. While wild rabbits, for instance, are always tinted gray or brown, the same rabbits, when domesticated, give birth to white and black varieties, though there has been no change either in climate or in food. The case is the same with domestic pigeons. But even suppos- ing that the most general features of animal col- ouring could be explained on this hypothesis, — which they cannot be, — there would still re- main the more remarkable cases of tree-frogs, which resemble bark, and of the so-called leaf- butterflies, which when at rest are indistinguish- able from leaves ; and the existence of such cases is a stumbling-block in the way of all the- ories save the theory of naturd selection. For according to the theory of natural se- lection each species of animals will be charac- terized by that shade of colour which is most advantageous to the species in the struggle for existence. Now, as Mr. Wallace observes, " concealment is useful to many animals, and absolutely essential to some. Those which have numerous enemies from which they cannot es- cape by rapidity of motion, find safety in con- cealment. Those which prey upon others must also be so constituted as not to alarm them by their presence or their approach, or they would soon die of hunger.*' In striking harmony with this general principle, we find that the great 30 NATURAL SELECTION majority of animals are so coloured as best to escape notice, and that animals which are not protectively coloured are animals whose habits of life are such as to enable them to dispense with secrecy. The polar bear is white, as the California bear is gray and the Hindustan bear black, because with a coat thus coloured it can best escape notice and secure its prey. The polar hare has a permanent coat of white ; but the alpine hare, the arctic fox, and the ermine, which do not live amid perpetual snow, have coats that are white in the winter only. Arctic owls, falcons, and buntings are coloured snowy white ; and the ptarmigan is white in winter, while " its summer plumage so exactly harmo- nizes with the lichen - covered stones among which it delights to sit, that a person may walk through a flock of them without seeing a single bird." In the sandy deserts of Northern Af- rica, all birds, without exception, all snakes and lizards, and all the smaller mammals, are of a uniform sandy colour. The camel is tinted like the desert in which he lives, and the same is true of the antelope and the Australian kanga- roo. The tawny lion, says Mr. Wallace, " is a typical example of this, and must be almost in- visible when crouched upon the sand or among desert rocks and stones." His brother, the tiger, " is a jungle animal, and hides himself among tufts of grass or of bamboos, and in these 31 COSMIC PHILOSOPHY positions the vertical stripes with which his body is adorned must so assimilate with the vertical stems of the bamboo as to assist greatly in con- cealing him from his approaching prey. How remarkable it is that besides the lion and tiger, almost all the other large cats are arboreal in their habits, and almost all have ocellated or spotted skins, which must certainly tend to blend them with the background of foliage — while the one exception, the puma, has an ashy brown uniform fur, and has the habit of cling- ing so closely to a limb of a tree, while waiting for his prey to pass beneath, as to be hardly dis- tinguishable from the bark." ^ Such nocturnal animals as owls, goat-suckers, mice, bats, and moles are dusky coloured. In tropical forests, where the trees are laden with green foliage all the year round, we find brilliant green pigeons and parrots ; while the northern snipe resem- bles the marshy vegetation in which it lives, and the woodcock, with its variegated browns and yellows, is inconspicuous among the autumn leaves.^ Arboreal iguanas are tinted leafy green ; and out of many species of tropical tree-snakes ^ Wallace, Natural Selection^ pp. 49, 53. ^ The general principle is well stated by Emerson, in this pretty quatrain : — *' He took the colour of his vest From rabbit's coat and grouse's breast j For as the wild kinds lurk and hide, So walks the huntsman unespied." 32 NATURAL SELECTION there is but one which is not green, and this kind conceals itself during the daytime in holes. Flat fish, like the skate and flounder, are col- oured like the gravel beneath them. Fishes which live among gorgeous coral reefs are mag- nificently tinted. The brilliant red hippocampi of Australia dwell among seaweed of the same colour. And numerous other examples from the vertebrate sub-kingdom are given by Mr. Wallace, from whose remarkable essay the ex- amples here given are culled. Before going farther, let us note how com- pletely these interesting phenomena are in har- mony with the theory of natural selection. The variability of the hues of domestic animals de- scended from a monotonously coloured wild species shows that there is no direct physiolo- gical necessity for the production of animals of a single given style of colouring. But it is tol- erably obvious that in the struggle for existence the most conspicuous among those animals which serve as food for others will be the soon- est detected, killed, and eaten ; while in general the most conspicuous carnivorous animals will be the most easily avoided, and hence will be the most likely to perish for lack of sustenance. And while it is not universally true of the higher animals, as it is of the lower animals and plants, that a much greater number perish than survive, the destruction of life is nevertheless VOL. in 23 COSMIC PHILOSOPHY so great that the fate of each creature must often depend upon apparently trivial circumstances. The explanation would therefore be satisfactory, even if protective shades of colouring could be regarded as circumstances of slight importance, — which they cannot. Since, therefore, it is natural selection which keeps up the protective hues of animals, by kilHng off all save the least conspicuous indi- viduals, we may understand why it is that ani- mals which have for several generations been domesticated no longer retain, without consid- erable deviation, their protective style of col- ouring. Freed from the exigencies of wild life, there is no longer an imperious need for con- cealment, and hence the unfavourably coloured individuals survive like the rest, and variety appears among members of the same species. In the cat family, which appears to have been originally arboreal, there is a strong tendency to the production of stripes and spots. In the lion, which is not arboreal, and in the puma, owing to the peculiarity above mentioned, these variegated markings have been almost wholly weeded out by natural selection.^ But in the domestic cat, along with these spots and stripes * The variegated marking usually appears, however, in lion- cubs ; thus showing that the variegated colouring of the leopard and tiger is relatively primary, while the monotonous colour- ing of the adult lion is relatively secondary. 34 NATURAL SELECTION which occasionally show its blood-relationship with the leopard and tiger, we more often meet with colours not paralleled among the wild species ; now and then we see cats which are coal-black or snowy white. Cows, horses, sheep, dogs, and fowl furnish parallel examples. Thus too we may understand why the sable and the Canadian woodchuck retain their brown fur during the winter ; for the one can subsist on berries, and is far more agile than any of its foes, while the other lives in burrows by the river-side and catches small fish that swim by in the water. And thus we may understand why it is that in the case of birds which build open nests, the female is dull coloured like the nest ; while on the other hand, the females of birds which build dorhed nests are often as brightly coloured as the males. Turning now to the insect world, we find a vast abundance of corroborative proof. Among the tiger-beetles examined by Mr. Wallace in the Malay islands, those which lived upon wet mossy stones in mountain brooks were coloured velvet green ; others, found for the most part on dead leaves in the forest, were brown ; others again, " never seen except on the wet mud of salt marshes, were of a glossy olive so exactly the colour of the mud as only to be distinguished when the sun shone,'' by casting a shadow. "In the tropics there are thousands of species 35 COSMIC PHILOSOPHY of insects which rest during the day clinging to the bark of dead or fallen trees ; and the greater portion of these are delicately mottled with gray and brown tints, which though symmetrically disposed and infinitely varied, yet blend so com- pletely with the usual colours of the bark, that at two or three feet distance they are quite in- distinguishable." Moths, which when resting expose the upper surfaces of their wings, have these dull coloured. Butterflies, on the other hand, which rest with their wings raised perpen- dicularly and laid together so as to show only the under surfaces, have the upper surfaces bril- liantly coloured, while the exposed under sur- faces are dusky and inconspicuous — or even marked in imitation of leaves. Mr. Wallace describes an East Indian butterfly whose wings are superbly tinted with blue and orange : this butterfly is a very swift flyer and is never known to settle save among the dead leaves in the dry forests which it frequents. When settled, with its wings raised, it imitates a shrivelled leaf so perfectly that even the keen eye of the natural- ist can hardly detect it. This protective colour- ing is found throughout the whole immense order to which belong grasshoppers, crickets, and locusts ; the most remarkable instance be- ing furnished by the so-called " walking-leaf," to which no description can do justice. On the other hand, hornets, bees, and wasps, which are 36 NATURAL SELECTION protected by their stings, are brilliantly but not in general protectively coloured. Bugs and ground - beetles emit a disagreeable, pungent smell, and they are often conspicuously coloured. But the most wonderful of all are the cases of protective mimicry. The heliconidae are among the most beautiful of South American butter- flies. Being never eaten by birds, on account of a nauseous liquid which exudes from them when touched, they are not only very lazy fly- ers, but have the under sides of their wings as gorgeously tinted as the upper side, so that they can be seen from quite a long distance. From the same cause they are prodigiously numerous, swarming in all the tropical forests. Now it is obvious that if another butterfly, not protected by a disagreeable odour or taste, were to resemble the heliconia in colouring, it would be as efliciently protected as by imitating a dead leaf or dry twig ; provided that there were but few of these butterflies among a large number of heliconias. For, as Mr. Wallace says, " if the birds could not distinguish the two kinds externally, and there were on the average only one eatable among fifty uneatable, they would soon give up seeking for the eatable ones, even if they knew them to exist.'' Now along with the heliconidae there does, in fact, live a distinct family of butterflies, the pieridae, most of which are white, and which are anatomically as distinct 37 COSMIC PHILOSOPHY from the heliconidae as a lion from a buffalo. But of these pieridae there is one genus, the leptalis, which exactly resembles the heliconias in external appearance. So close is the resem- blance that such expert naturalists as Mr. Bates and Mr. Wallace have been repeatedly deceived by it at the time of capture. Moreover, each species of this genus leptalis is a copy of the particular species of heliconia which lives in the same district. Every band and spot and fleck of colour in the heliconia is accurately repro- duced in the leptalis ; and besides this, the lazy mode of flight is also imitated ; while in point of numbers, we find about one leptalis to a thousand heHconias. Nor is this the only in- stance. So preeminently favoured are these beautiful insects by their disgusting taste, that they are exactly imitated by at least three gen- era of diurnal moths. In other parts of the world similar phenomena have been noticed. The relationship of the leptalis to the heliconia is repeated in India, in the PhiHppine Islands, in the Malay archipelago, and in various parts of Africa ; the protected insect being, in all these cases, very much less numerous than the insect whose colours it mimics. In similar wise, bees and wasps are often imitated by beetles, by flies, and even by moths. For further details I must refer to Mr. Wal- lace's essay, which is a singularly beautiful 38 w NATURAL SELECTION specimen of inductive reasoning. The facts al- ready cited are quite enough to sustain the gen- eral conclusion that the colours of animals are in the main determined by the exigencies of the struggle for existence. Where it is for the advantage of an animal to be concealed, as in the great majority of cases, its colour, whether brilliant or sombre, is such as to protect it. But where the animal is otherwise adequately protected, — either by its peculiar habits, by a sting, a disgusting odour or taste, or a hard carapace, — and where it is not needful for it to be hidden from the prey upon which it feeds, then there is usually no reference to protection in the colour of the animal. In some of these cases, however, a very conspicuous colouring becomes protective — as in the case of the jet- black toad which Mr. Darwin saw in La Plata, which emitted a poisonous secretion, and which, when crawling over the sandy plain, could not fail to be recognized by every passing creature as an object to be avoided. In many cases the gorgeous tints of the otherwise protected male animal are due to what is called " sexual selection," — to the con- tinual selection of the more beautiful males by the females. To this cause is due the magni- ficent plumage of the male bird of paradise ; and Mr. Darwin would similarly explain the brilliant colours of many male butterflies. In 39 COSMIC PHILOSOPHY his work on the " Descent of Man " may be found an account of the elaborate observations which have led to these conclusions. Without feeling it necessary to insist upon the validity of all the special explanations contained in that work, we must admit that the general theory is substantiated by a superabundance of induc- tive evidence. And when this kind of selection is taken in connection with the need for pro- tective concealment, we have the means of ex- plaining by far the greater part of the colouring found in the animal kingdom. The colours of the vegetal kingdom have, to a considerable extent, been no less satisfac- torily explained. " Flowers do not often need protection, but very often require the aid of insects to fertilize them, and maintain their re- productive powers in the greatest vigour. Their gay colours attract insects, as do also their sweet odours and honeyed secretions ; and that this is the main function of colour in flowers is shown by the striking fact that those plants which can be perfectly fertilized by the wind, and do not need the aid of insects, rarely or never have gaily coloured flowers." ^ Returning for one moment to the case of animals, which are usually benefited by conceal- ment but sometimes by conspicuousness, let us note Professor Shaler's ingenious explanation ^ Wallace, Natural Selection y p. 262. 40 NATURAL SELECTION of the rattlesnake's rattle. The existence of this appendage has long been a puzzle to phi- losophical naturalists, and Darwinians have been repeatedly challenged to account for the forma- tion or preservation by natural selection of an organ assumed to be injurious to the species. The difficulty has lain in the assumption, too hastily made, that the noise or the rattle must be prejudicial to the snake by forewarning its enemies or prey of its presence, and thus giving the enemies time for sudden attack, and allow- ing the prey to escape. On the theory of nat- ural selection, the preservation of the species must entail the atrophy of such an organ, or, rather, must prevent its origination, unless the damage occasioned by it be more than com- pensated by some utility not hitherto detected. Professor Shaler's hypothesis, however, sug- gests the possibility that this whole speculation is fundamentally erroneous. Far from being injurious to the snake, by serving to warn its prey, it would appear that the rattle may be directly useful by serving as a decoy. Professor Shaler has observed that the peculiar sound of the rattle is a very close imitation of the note emitted by a certain cicada common in Amer- ican forests frequented by rattlesnakes ; and ac- cording to his ingenious suggestion, the bird, hearing the note and thinking to make a meal of the cicada, advances upon its own destruc- 41 COSMIC PHILOSOPHY tion, becoming the eaten instead of the eater. If this be true, there may be data here for ex- plaining some of the alleged phenomena of fascination, so far as rattlesnakes are concerned ; and another case will be added to the numer- ous cases now on record in which certain ani- mals have acquired, for utility's sake, peculiari- ties characteristic of totally different species. I should be more inclined, however, to adopt quite a different interpretation of the rattle- snake's rattle. As hinted above, the general law that animals are benefited by concealment has some important exceptions. In many cases, when an animal is especially noxious, it is for his advantage to be conspicuous, that en- emies may recognize him at a distance and keep away from him. Thus, as we have seen, while grasshoppers, moths, and butterflies (on the ex- posed under-surfaces of their wings) are usually so coloured as best to escape notice, on the other hand, bees and wasps, which are pro- tected by their stings, and many beetles, which are protected by a noxious taste or odour, are apt to be conspicuously coloured. And the jet-black toad of La Plata is a still better ex- ample. Now a rattlesnake is unquestionably a very noxious animal, and so dangerous to its enemies that they will always do well to keep out of its way. Moreover the death wound in- flicted by it, though usually very sure, is some- 42 I NATURAL SELECTION what slow in operation ; so that in a fierce struggle it will often happen that its action is not prompt enough to preclude a return of compliments fatal to the snake. When a tiger tears open the jugular vein of his enemy, the enemy is placed hors de combat at once ; but when the rattlesnake has bitten, there is nothing to prevent the foe from employing his few remaining moments in tearing the serpent to pieces. Hence the rattlesnake must be pecu- liarly benefited by an apparatus which serves as a signal to warn enemies of his presence, and to keep them from attacking him. His more formidable enemies, belonging chiefly to the mammalian class, are certainly intelligent enough to profit by such warning and shun the danger ; and as it is plainly for the snake*s advantage to avoid even a conflict, it is clear that he is prac- tically helped even less by his terrible bite than by his power of threatening a bite. This explanation seems to me quite sound in principle. Yet if we adopt it, there is no- thing to prevent us from giving due weight also to Professor Shaler*s suggestion. The success with which the note of the cicada is counter- feited by the rattle is a point to be more fully determined by further observation. And if it turns out that the rattle fulfils the double pur- pose of alarming sundry animals that are hos- tile and of enticing sundry others that are good 43 COSMIC PHILOSOPHY for food, it will not be the first case in which it has happened that a structure useful in one way has also become useful in another way. The question is an interesting one, and valuable if only because it reminds us of the danger of rea- soning too confidently, from a priori premises, about matters the due elucidation of which re- quires careful study of the details of the every- day life of animals. It is one of the great merits of the theory of natural selection that it has directed so many naturalists, with eyes open, into this fruitful field of inquiry. It is because it so well illustrates the wealth of suggestiveness in Mr. Darwin's theory, that I have ventured upon this digression. To the general validity of that theory, or even to the validity of the more special hypothesis concern- ing the uses of concealment or of conspicuous- ness, the success of the foregoing explanation is not essential, — since its possible inadequacy may very well be due to the incompleteness of our grasp upon all the details of this particular case. But, returning from this digression to our main thesis, and considering the general signi- ficance of the phenomena of colour, we see that, in addition to those most general phenomena of organic life which demand for their explana- tion the Darwinian theory, there is at least one special class of phenomena which that theory is competent to explain even in minute details. 44 NATURAL SELECTION And there are other special classes of pheno- mena to which it has been applied with equally remarkable success. But when a theory, de- duced from the observed general facts of or- ganic life, and invoking no agencies but such as are known to be in operation, is found on trial to account for such an enormous mass of special facts, for which no other valid explana- tion has been propounded, — we may well say of it, as Laplace said of his own Nebular Hy- pothesis, that the chances in favour of its being a true explanation are many thousand million to one. 45 CHAPTER XI TWO OBJECTIONS CONSIDERED WHEN an objection to a complex the- ory in any department of science is so extremely obvious as to seem at first sight fatal to the theory, it is unwise to urge it in argument until we have very thoroughly considered the matter. Men like Laplace and Goethe, Spencer and Darwin, in framing their theories of evolution, are indeed liable to over- look difficulties which are so unobtrusive as to be detected only after prolonged observation ; but they are very unlikely to overlook difficul- ties which are so conspicuous as to occur at once to the minds of a hundred general readers. When, therefore, a reader of average culture, who has perhaps never seriously bent his mind to the question of the origin of species, and who is very likely unacquainted with the sciences which throw light upon that subject, finds him- self immediately confronted by difficulties in a theory which men of the highest learning and capacity have spent a quarter of a century in testing, common prudence should lead him to continue his study until he has made sure that 46 H TWO OBJECTIONS CONSIDERED ^Hie difficulty is not due to his own ignorance ^Hather than to the shortcomings of the theory. ^K^his wholesome caution is too seldom mani- ^^ested by literary reviewers, many of whom, in criticising Mr. Darwin's theory without having duly read his works, allege certain objections as being quite obvious to all intelligent people, save to the one-sided speculator who is supposed to have ignored them. In Mr. Darwin's case, this mode of treatment is peculiarly impertinent, since even the less obvious objections to the theory of natural selection were for the most part foreseen and answered in the first edition of the "Origin of Species," — a book to which, as to an arsenal of scientific facts, one must still resort who would deal intelligently with the latest criti- cisms directed against the theory. The most obvious objection to the Darwinian theory is the paucity, or, as it is often incorrectly alleged, the absence, of transitional forms in the various sedimentary strata. This is at first sight a weighty objection against the doctrine of natu- ral selection, according to which the progress has been effected by infinitesimal increments ; although it is of no force against the doctrine of derivation, as held by Mr. Mivart, who rejects the maxim N at ur a non facit s ahum ^ ?ind main- tains that progress has been effected by sudden jumps, occurring at rhythmical intervals. Mr. Mivart's suggestion, however, cannot be en- 47 COSMIC PHILOSOPHY tertained as a scientific hypothesis so long as it alleges no physical agencies competent to effect the sudden jumps from one specific form to another ; nor does the comparative paucity of transitional forms in a fossil state afford any reason for our adopting it. A brief considera- tion will show us that the fact is entirely con- sistent with the theory of progress by minute variations. In the first place, let us note that in gen- eral intermediate transitional forms must be the soonest killed off in the struggle for existence ; and that, especially, where two strains or va- rieties become further differentiated into true species, it is the extreme forms which multiply at the expense of those which are intercalated between them. Here, as on a former occasion, our comprehension of the argument will be facilitated by a reference to the analogous set of phenomena which occur during the process of linguistic differentiation. It is held by most philologists that all languages in the tertiary or amalgamative stage of development must have previously existed in the secondary or aggluti- native stage, — and, at a yet earlier period, in the primary or juxtapositive stage, of which the Chinese is a still living example. Against this view M. Renan has urged the absence or pau- city of transitional forms connecting one class of languages with another. Now in answering 48 r TWO OBJECTIONS CONSIDERED M. Kenan's objection, I have begun b^ show- ing, from a consideration of the Romanic dia- lects, that the difficulty is only imaginary. " A language like Latin, spread over a vast space of country in imperfectly civilized times, inevitably breaks up into a host of local patois. Each se- cluded rustic community has its own style of pronunciation, its own choice of words and syn- tactical devices, its own method of contracting or otherwise modifying its expressions. And although the inhabitants of any given town can usually communicate with those of the next town, the slight differences accumulate until intercourse between distant places is no longer practicable. In such a state of things we find plenty of transitional dialects, as the Genoese and Provencal between Italian and French, and the Balearic and Catalan between French and Spanish. The Tuscan can understand the Gen- oese, the Genoese can understand the dweller in Piedmont, the Piedmontese can understand the Vaudois, the Vaudois can understand the Lyonnais, and so on until we come to Paris ; but the Tuscan and the Parisian cannot under- stand each other. Now the progress of civili- zation in each country tends to kill out the patois, elevating that variety of the language which has been made the vehicle of the domi- nant literature to supremacy over the more provincial forms. Increased facilities of com- voL. ni 49 COSMIC PHILOSOPHY munication, and the growth of large centres of population, and commercial as weH as literary activity, end by making the inhabitants of all parts of the country speak and write more and more Hke those of its intellectual metropolis. And in this way the intermediate dialects slowly disappear, leaving two languages with thor- oughly distinct individualities, like Italian and French." ^ Now even here, as I go on to show, the relationships among the dialects have be- come sufficiently obscured — owing to disap- pearance of connecting links — to allow M. Raynouard to maintain the paradox that the modern Romanic languages are descended, not directly from the Latin, but from the old Pro- ven9al. And in such countries as Hindustan, the processes of divergence, and accompanying obliteration, have gone on to such an extent that Bengali has been mistaken for a non- Aryan lan- guage. Here in the domain of language we see that competition is most severe and destructive be- tween closely allied forms, and that the extremes will vigorously flourish long after the short- lived means have been crushed out of existence. The maxim In medio tutissimus ibis does not apply to such cases. We have now to observe that among the phenomena which natural his- ^ ** The Genesis of Language,** North American Review ^ October, 1869, pp. 334* 335- 50 r TWO OBJECTIONS CONSIDERED tory deals with, a quite similar process goes on. First we may note, with Mr. Darwin, that " as the species of the same genus usually have, though by no means invariably, much similarity in habits and constitution, and always in struc- ture, the struggle will generally be more severe between them, if they come into competition with each other, than between the species of distinct genera. We see this in the recent ex- tension over parts of the United States of one species of swallow having caused the decrease of another species. The recent increase of the missel-thrush in parts of Scotland has caused the decrease of the song-thrush. How frequently we hear of one species of rat taking the place of another species under the most different cli- mates ! In Russia the small Asiatic cockroach has everywhere driven before it its great con- gener. In Australia the imported hive-bee is rapidly exterminating the small stingless native bee. One species of charlock has been known to supplant another species ; and so in other cases. We can dimly see why the competition should be most severe between allied forms, which fill nearly the same place in the economy of nature ; but probably in no one case could we precisely say why one species has been vic- torious over another in the great battle of life." 1 ^ Origin of Species, 6th edition, p. 59. 51 COSMIC PHILOSOPHY For our present purpose, however, it is not needful that we should be able to accomplish the latter task, which would require a know- ledge of the minutiae of the organic world such as is not likely to be possessed by any one for a long time to come. It is enough for us to note that the ordinary process of competition, among organisms as among dialects, tends to kill out the means much sooner than the ex- tremes. Still more clear will this become, if we recur to one of the hypothetical illustrations given in the preceding chapter. It was there shown that, in the case of a group of ruminants hitherto isolated from carnivorous foes, and in which different strains or varieties have begun to establish themselves, a newly arriving inci- dent force, in the shape of strong and swift carnivora, will at once tend to exterminate all the intermediate forms, while the extremes will not only be indefinitely preserved, but will be- come yet more widely different from each other. Now this hypothetical case is probably a fair sample of a very large proportion — perhaps the majority — of the cases in which specific variations have been rapidly accumulated and persistently fixed. It is by no means Hkely that variation has gone on throughout the past with a uniform pace ; but there must rather have been immensely long periods of comparative stability, alternating with relatively brief periods, 52 I TWO OBJECTIONS CONSIDERED during which newly introduced sets of circum- stances have tended to enhance and accumulate variations on either side of a hitherto established mean. Such a conclusion is implied by the theory of natural selection, according to which specific variation occurs, not in conformity to some mysterious law of progress uniformly operating, but only in conformity to some more or less conspicuous alteration in the sum total of the conditions of existence. It follows, therefore, that in general, when incipient varieties are differentiated into well- marked species, the number of intermediate forms must be immeasurably smaller than the numbers of forms contained in the resulting species to which they serve as the transition. During epochs of rapid divergence, the means may all be extinguished after a few hundred generations, while the generations of the ex- tremes which persist thereafter may be num- bered by tens of thousands. Suppose, for ex- ample, two great islands separated by a shallow sea. During long ages, while the floor of this intervening sea is constantly rising, the specific changes occurring on either island may be quite few and unimportant, and such fossil records as are left will indicate a general persistence of type. But when in course of time the pro- cess of elevation has converted this interven- ing channel into an isthmus connecting the two S3 COSMIC PHILOSOPHY islands, there must inevitably ensue a marked change in the conditions of existence in both regions. Extinction will go on at a relatively- rapid pace ; and, as above illustrated, this ex- tinction must ordinarily result in the disappear- ance of intermediate forms and the preservation of extremes. After a while this process must result in the establishment of an approximate equilibrium among the forms of life over both areas, such as formerly obtained over each area separately. And thus for a long time to come, the specific changes occurring will again be few and unimportant. Thus we see graphically illustrated the truth that, in comparison with the myriads of individ- uals comprising the well-defined species which propagate themselves through long ages with relative stability of character, the number of intermediate individuals which ever come into existence must be relatively small. We have next to note that, even of this relatively small number of individuals, a still smaller relative number are likely to leave after death a per- manent fossil record of their existence. In the first place it is only by a rare com- bination of circumstances that any plant or ani- mal gets fossilized at all. The chances were nearly infinite against the preservation of any of the very earliest organisms, with their soft and speedily decaying textures. The higher 54 r TWO OBJECTIONS CONSIDERED land animals, on the other hand, owe their oc- casional preservation to the accidents of dying in sheltered caves, or of being covered with blown sand or peat-moss, or of being frozen in Arctic ice. Trees with solid trunks, littoral and marine animals, especially crustaceans and shell- covered mollusks, are more likely to be pre- served than other organisms. But in the second place, the majority of the organisms once fos- silized are afterwards destroyed along with the sedimentary strata which contain them. Since there have been several enormously long alter- nating periods of elevation and of subsidence, it follows that all the older sedimentary strata must have been metamorphosed by volcanic heat. These oldest rocks have sunk to a depth of six or eight miles, down below the ocean-floor, where they have been metamorphosed by the heat of the molten liquid below, and whence they have again been slowly shoved up above water- level, with all traces of their organic contents obliterated. This process must have occurred so many times as to have destroyed all but the later records of life. The title "palaeozoic,'* formerly applied to the Silurian rocks, is a mis- nomer. It was formerly supposed that there were no fossil-bearing rocks below the Silurian. But within a few years the Cambrian and Lauren- tian strata have been discovered, carrying us back into an antiquity nearly twice as great as 55 COSMIC PHILOSOPHY that to which we had reached with the Silurian rocks ; and it is now generally admitted that even the Laurentian strata are modern com- pared with the beginnings of life upon our globe. But this is not all. Along with the im- mensely long geologic rhythms, which have thus entailed the periodic metamorphosis of strata, there have been going on minor rhythms, resulting in the alternate deposit and denuda- tion of fossil-bearing strata. Each of the sedi- mentary strata now surviving was deposited during an epoch of subsidence, and since its elevation to its present position has been more or less denuded. Now it is only during epochs of subsidence that permanent fossil - bearing strata can be deposited. During epochs of ele- vation the newly formed sedimentary deposit is rapidly disintegrated by the action of coast- waves ; and even those thin deposits which are made during an epoch of subsidence are in the next-recurring epoch of elevation soon worn away. It is thus only the thicker strata de- posited during an epoch of subsidence which have preserved for our inspection a few speci- mens of the organisms living at the time when they were deposited. But in close juxtaposition to this comes the remarkable fact that the most rapid variation among specific forms must take place during 56 TWO OBJECTIONS CONSIDERED )Ochs of elevation. For since the only varia- I ^Kons preserved by natural selection are those which bring the organism into closer adaptation to its environment ; and since in most cases the organic environment of any group of organ- isms, comprising its enemies, competitors, and prey, is a much more important factor of change than its inorganic environment, comprising cli- mate and soil ; it follows that those periods dur- ing which groups of organisms, hitherto isolated, are gradually brought into contact with one an- other must be the periods most favourable for specific change. The most rapid variation, at- tended by the greatest frequency of transitional forms, will therefore occur during those epochs of elevation when archipelagoes are being con- verted into continents, and when shallow parts of the sea, hitherto divided by deep channels, are getting practically united together by the diminishing depth of the channel. During such periods it is not only the inorganic agencies of climate and soil which will be altered ; the or- ganic environment of each group of organisms will be immensely increased in extent and het- erogeneity. The struggle for existence will in- crease in violence, and there will be an increased amount both of variation and of extinction. We are thus driven to the remarkable con- clusion, not only that each system of fossilifer- ous strata now remaining has been preceded 57 COSMIC PHILOSOPHY and followed by systems destroyed as fast as they were formed, but also that the systems thus destroyed coincided with the periods which must have been richest in transitional forms. But notwithstanding the extreme imperfec- tion of the geological record, and notwithstand- ing these special difficulties in the way of find- ing transitional forms, such forms are frequently met with. Indeed it may be asserted, as one of the most significant truths of palaeontology, that extinct forms are almost always intercalary be- tween forms now existing. Not only species, genera, and families, but even orders of con- temporary animals, apparently quite distinct, are now and then fused together by the discov- ery of extinct intermediate forms. In Cuvier's time, horse, tapir, pig, and rhinoceros were ranked as a distinct order from cow, sheep, deer, buffalo, and camel. But so many transi- tional forms have been found in tertiary strata that pachyderms and ruminants are now united in a single order. By numerous connecting links the pig is now seen to be closely united with the camel and the antelope. Similar results re- lating to the proboscidians, the hyaena family of carnivora, the apes, the horse, and the rhi- noceros, have been obtained from the explora- tion of a single locality near Mount Pentelikos in Greece. Among more than seventy species there discovered, the gradational arrangement 58 TWO OBJECTIONS CONSIDERED of forms was so strongly marked, that the great palaeontologist, M. Gaudry, became a convert to Mr. Darwin's theory in the course of the search.^ Referring for many more such exam- ples to the last edition of Sir Charles Lyell's " Principles of Geology," let me further observe that there has as yet been but little search for fossils save in Europe and North America, and even these areas have by no means been thor- oughly explored. Concerning South America much less is known, and the greater portions of Asia, Africa, and Australia are just so much terra incognita to the palaeontologist. As M. Gaudry observes, a few strokes of the pickaxe at the foot of Mount Pentelikos have revealed to us the closest connecting links between forms ^ We may also profitably consider the toxodon, found by Mr. Darwin in South America, which is ** one of the stran- gest animals ever discovered. In size it equalled an elephant or megatherium, but the structure of its teeth, as Mr. Owen states, proves indisputably that it was intimately related to the Gnawers, the order which at the present day includes most of the smallest quadrupeds : in many details it is allied to the pachydermata : judging from the position of its eyes, ears, and nostrils, it was probably aquatic, like the dugong and manatee, to which it is also allied. How wonderfully," says Mr. Darwin, " are the different orders, at the present time so well separated, blended together in different points of the structure of the toxodon ! " Darwin, Voyage of the Beagle, p. 82. Compare the remarks on the quaternary fauna of Western Europe in Sir John Lubbock's Prehistoric Times , zd edition, pp. 296-298. 59 COSMIC PHILOSOPHY which seemed before very widely separated : far closer will such links be drawn when a consid- erable portion of the earth's surface shall have been thoroughly investigated. The argument from " missing links/' there- fore, in so far as it has any validity at all, is an argument which rests entirely upon negative evidence. But negative evidence, as every one knows, is a very unsafe basis for argument.^ A single item of positive evidence will always out- weigh any amount of negative evidence. A single case in which two or three species of genera are demonstrably connected with each other through lineally intermediate forms, is enough to outweigh the case of a thousand species or genera in which no such linear con- nection has yet been demonstrated. Now there can be no question that Equus^ Hipparion^ and Anchitherium are quite distinct genera ; and a comparison of the skeletons of the three leaves it equally unquestionable that the hipparion is simply a more ancient horse, and that the anchi- 1 ** For instance, the several species of the chthamalinze (a sub-family of sessile cirrhipeds) coat the rocks all over the world in infinite numbers : they are all strictly littoral, wdth the exception of a single Mediterranean species, which inhab- its deep water, and this has been found fossil in Sicily, whereas not one other species has hitherto been found in any tertiary formation : yet it is known that the genus chthamalus existed during the Chalk period. ' * Darwin, Origin of Species, 6th edi- tion, p. 271. 60 I TWO OBJECTIONS CONSIDERED therium is simply a more ancient hipparion. As Professor Huxley observes : " The process by which Anchitherium has been converted into Equus is one of specialization, or of more and more complete deviation from what might be called the average form of an ungulate mam- mal. In the horses, the reduction of some parts of the limbs, together with the special modifi- cation of these which are left, is carried to a greater extent than in any other hoofed mam- mals. The reduction is less and the specializa- tion is less in the hipparion, and still less in the anchitherium ; but yet, as compared with other mammals, the reduction and specialization of parts in the anchitherium remain great." ^ But as we go back still farther into the Eocene epoch, we find Plagiolophus, a genus intermedi- ate between the horse and the agouti, in which the reduction and specialization of parts is still less. Here, where the exploration has been relatively complete, the intermediate forms are so numerous as to leave no doubt whatever as to the genetic kinship.^ And similarly of the ^ Critiques and Addresses y Tp. 195. 2 I may add that, in particular, numerous extinct forms intercalary between man and ape are likely to be discovered when we search for them in those parts of the earth where they are Ukely to exist, — namely, in Africa, Madagascar, South- eastern Asia, and the Malay Archipelago. Such forms are not Hkely, however, to be directly intermediate between man and the gorilla or the chimpanzee. For these are probably 61 COSMIC PHILOSOPHY rhinocerotidae and hyaenidae Professor Huxley says, " it is indeed a conceivable (?) supposition that every species of rhinoceros and every spe- cies of hyaena, in the long succession of forms between the Miocene and the present species, was separately constructed out of dust, or out of nothing, by supernatural power ; but until I receive distinct evidence of the fact, I refuse to run the risk of insulting any sane man by sup- posing that he seriously holds such a notion." It thus appears that the argument from " missing links," which to the general reader may appear so obviously fatal to the Darwinian theory, is to the student of palaeontology by no means alarming. Our brief survey of the facts in the case has shown ms firsts that transitional varieties are always likely to have been less nu- merous in individuals than the well-defined species which they serve to connect ; secondly, that the geologic eras which have left in the rocks the record of their organic life have been usually the eras in which variation and extinc- tion have been least rapid, and in which ac- cordingly transitional varieties have been least numerous ; and thirdly^ that in spite of all these aberrant types, and the connection between man and the anthropoid apes is to be sought much lower down, — perhaps near the point of departure of the anthropoid apes from the lower monkeys and lemurs. See the anatomical evidence very well presented in Mr. Mivart's recent work on Man and Apes. 62 TWO OBJECTIONS CONSIDERED adverse circumstances, transitional forms have already been discovered in considerable num- bers, while it is fair to expect that many more will be discovered when by and by we have come to know the earth's surface more inti- mately. Of all the objections which have been urged against the theory of natural selection, this ob- jection, from the paucity of transitional forms, is the least weighty, though probably the most obvious. The second objection which we have to consider, though less immediately obvious, is more weighty ; and though there is no reason for regarding it as insuperable, we must admit that it has not yet been entirely disposed of. This objection is implicated with the difference between the morphological and the physiolo- gical definitions of species, and is usually known as the argument from the infertility of hybrids. As ordinarily stated, indeed, this argument is merely the expression of a sorry confusion of ideas. By a curious misunderstanding the in- fertility of the mule is often urged as a direct objection to the Darwinian theory. But this is putting the cart before the horse. It is not the infertility of the offspring of the horse and the ass which should be cited as an obstacle to the theory of natural selection, but it is the fer- tility of the offspring of the carrier-pigeon and the pouter, or of the pouter and tumbler. Mor- 63 COSMIC PHILOSOPHY phologically the carrier, the pouter, and the tumbler may well be regarded as distinct species artificially developed from a common wild stock ; but so long as mutual infertility is held to be the physiological test by which we are to dis- tinguish between varieties and species, it may be argued that, in spite of their great morpho- logical differences, the carrier and the tumbler are only varieties and not true species. And going a step farther, it may be argued that until the theory of natural selection has accounted for the rise of infertility between races descended from a common stock, it has not completely performed the task of reconciling deduction with observation. Against the derivation theory in general this objection has no weight whatever. That races originally fertile together should, after long subjection to different sets of circumstances, be- come infertile with one another, is a priori in the highest degree probable, when we reflect upon the extreme sensitiveness of the reproduc- tive system to changes of habit in the organism as a whole. When we remember that " the constitution of many wild animals is so altered by confinement that they will not breed even with their own females," we need not be sur- prised that the leopard and the lion, which dur- ing many ages have had very different habits of life, will not breed with each other. Nor 64 I TWO OBJECTIONS CONSIDERED need we wonder that the horse and the ass, with less important differences in general habit, have become partially infertile together, to such an extent that their offspring are hopelessly barren. Though the modus operandi of this change is as yet ill understood, it is nevertheless a change quite in harmony with what we know concern- ing the intimate dependence of the reproductive system upon the rest of the organism. And let us not fail to note that it is the achievement of this change in the capacities of the reproduc- tive system which completes the demarcation between two bifurcating species, and finally pre- vents the indefinite multiplication of intermedi- ate varieties. But while this objection has no weight as against the theory of derivation in general, it may fairly be urged that the failure to explain the origination of mutual infertility is, for the present at least, a shortcoming on the part of the theory of natural selection. After the con- clusive arguments brought up in our ninth chapter, the derivation theory will no longer, in the present work, be regarded as on trial : that the higher forms of life are derived from lower forms will be taken as proved. But whether the theory of natural selection has completely fulfilled its proposed task of explaining the mode in which such derivation has been brought about, is quite another question. And while VOL. Ill O^ COSMIC PHILOSOPHY admitting the full force of the considerations alleged by Mr. Darwin, in his admirable chap- ter on Hybridism, it seems to me that there is a gap at this point which further research will be required to fill.^ As Professor Huxley re- minds us, " it must not be forgotten that the really important fact, so far as the inquiry into the origin of species goes, is that there are such things in nature as groups of animals and of plants, whose members are incapable of fertile union with those of other groups ; and that there are such things as hybrids, which are ab- solutely sterile when crossed with other hybrids. For if such phenomena as these were exhib- ited by only two of those assemblages of living objects, to which the name of species ... is given, it would have to be accounted for by any * I doubt if the hypothesis of natural selection, taken alone, will afford the solution of this problem. It seems more likely that such considerations will have to enter as are presented in Mr. Spencer's Principles of Biology ^ vol. i. pp. 209-291. Concerning what may be called the ** dynamics of heredity,'* we know as yet but little ; but as far as speculation has already gone, Mr. Darwin's theory of pangenesis seems to me decid- edly inferior to Mr. Spencer's theory of physiological units. I do not discuss these theories here, because it is not necessary for the general purposes of this work. It may do no harm, however, to remind some of my readers that ** pangenesis " is merely a subsidiary hypothesis, with the possible inadequacy of which Mr. Darwin's main theory is in no way con- cerned. 66 I TWO OBJECTIONS CONSIDERED leory of the origin of species, and every the- ry which could not account for it would be, so ir, imperfect." ^ We have now reached a point at which we may pause for a moment to contemplate the theory of natural selection in its logical aspect, and to mark its character as a scientific hypo- thesis. A moment's inspection will reveal the absurdity of the thoughtless remark — some- times heard from theologians and penny-a-liners — that the Darwinian theory rests upon purely gratuitous assumptions and can never be sub- mitted to verification. On the contrary, the theory of natural selection, when analyzed, will be found to consist of eleven propositions, of which nine are demonstrated truths, the tenth is a corollary from its nine predecessors, and the eleventh is a perfectly legitimate postulate. Let us enumerate these propositions : — 1. More organisms perish than survive; 2. No two individuals are exactly alike ; 3. Individual peculiarities are transmissible to offspring; 4. Individuals whose peculiarities bring them into closest adaptation with their environment are those which survive and transmit their pe- culiar organizations ; 5. The survival of the fittest thus tends to ^ Huxley, Lay Sermons y p. 303. 67 COSMIC PHILOSOPHY maintain an equilibrium between organisms and their environments ; 6. But the environment of every group of organisms is steadily, though slowly, changing ; 7. Every group of organisms must accord- ingly change in average character, under penalty of extinction ; 8. Changes due to individual variation are complicated by the law that a change set up in any one part of a highly complex and coherent aggregate, like an organism, initiates changes in other parts ; 9. They are further complicated by the law that structures are nourished in proportion to their use ; 10. From the foregoing nine propositions, each one of which is indisputably true, it is an inevitable corollary that changes thus set up and complicated must eventually alter the specific character of any given group of organisms ; 11. It is postulated that, since the first ap- pearance of life upon the earth's surface, suffi- cient time has elapsed to have enabled such causes as the foregoing to produce all the spe- cific heterogeneity now witnessed. It seems to me that this summary fairly re- presents the logical character of the theory of natural selection. The theory is so strong that no scientific writer is disposed to deny that the process of natural selection has always gone on 68 I TWO OBJECTIONS CONSIDERED i^and must continue to go on. And the inference I^Bbannot be avoided that in due course of time the ^R)rocess must work specific variations. The only ^K)urely hypothetical portion of the theory is the ^^wssumption that past geologic time has been long enough to allow of the total process of evolution by such infinitesimal increments. But concern- ing this assumption, it is the clear verdict of logic, that if the theory is thoroughly substan- tiated in all its other portions, we have the right to claim as much time as is needful, provided we do not run counter to conclusions legitimately reached by astronomy, geology, or physics. Now concerning the age of the earth, neither astro- nomy, nor geology, nor physics has as yet had anything conclusive to say ; and it must be left for future inquiries to give us the quantitative data requisite for settling this point.^ We can- ^ The reader who wishes to see how fallacious all attempts at reaching the age of the earth from astronomico-physical ar- guments are likely to prove with our present resources, may consult Huxley's Lay Sermons y pp. 268—279. ^[See Fiske's further remarks on this subject in the Excur- sions of an Evolutionist y I. The discussion of the physical and geological evidences of the age of the earth has become more prominent in the literature since Fiske wrote the sentences of the text. Lord Kelvin has recently elaborated his earlier physi- cal arguments in favour of a decided limitation of the age of the earth ; and geologists have undertaken new forms of reply. Yet though the question now has more *' actuality '* than Fiske assigns to it, it is still far from a solution about which authori- ties agree.] 69 COSMIC PHILOSOPHY not yet, indeed, estimate the age of the last great glacial epoch with any approach to accuracy ; yet the age which we assign to this epoch must enter as an important factor into our estimates of the antiquity of preceding epochs. But while this point remains undetermined, it may be noted that even the decision which leaves the smallest time for the operation of unaided natural selec- tion can weaken the Darwinian theory only on the assumption that the agency already alleged by that theory has been the sole factor concerned in forwarding organic evolution — and this as- sumption, though it may have been made by over - confident disciples of Mr. Darwin, has never been made by Mr. Darwin himself. Mr. Darwin is too profoundly scientific in spirit to imagine that, with all his unrivalled patience and sagacity, he has completely solved one of the most intricate problems with which the stu- dent of nature has ever been called upon to deal. It is more than likely that future research will disclose other agencies which have cooperated with natural selection in accelerating the diver- sification of species. Meanwhile the evidence in behalf of the first ten propositions involved in the Darwinian theory is sufficiently strong to make it apparent that a vast amount of specific change must have taken place, and also that natural selection has been a chief factor in pro- ducing that change. To the arguments which 70 I TWO OBJECTIONS CONSIDERED in our ninth chapter were seen to overthrow the dogma of fixity of species may now be added the argument that at least one group of clearly defined agencies is at work, with which, in the long run, the fixity of species must become in- compatible. The explanation of the details of specific differentiation may well form the subject of cautious investigation for many generations of observers and thinkers. But enough has already been explained to draw forth the undeniable Fact of Derivation from the region of mystery in which it was formerly half hidden, and thus to place the Theory of Derivation upon a thor- oughly scientific basis. In expounding the way in which this has been done, we have obtained several useful conceptions, which will not fail to do us good service in future chapters. 71 CHAPTER XII ADJUSTMENT, DIRECT AND INDIRECT 1 /^ N objection much less obvious than the A-\ two considered in the foregoing chapter •^ -^ is brought up by Mr. Mivart against the theory of natural selection. In the Cuvier- ian classification, the marsupials were ranked as an order of mammalia, side by side with orders like the carnivora or rodentia. This arrange- ment is now obsolete. The class of mammals is no longer directly divided into orders, but is first separated into three sub-classes, the mono- delphia, didelphia, and ornithodelphia. The lat- ter sub-class, forming the link between mam- mals and sauroids, is now nearly extinct, being represented only by a single order, containing two genera, the Australian echidna and duck- bill. Leaving these aside, all other mammals, except the marsupials, are comprised within the sub-class monodelphia. The didelphia or mar- supials are divided by Professor Haeckel into eight orders ; and between these orders and sun- dry orders of the higher monodelphia there is a ^ [See Introduction, § 19.] 72 ADJUSTMENT, DIRECT AND INDIRECT curious parallelism. For example there is an order of edentate marsupials, there is a marsupial or- der of carnivora, and another of insectivora, and another of rodents, while the kangaroo strongly resembles the sub-order of ruminants, and the opossum is clearly related to the lemurs, or low- est of the primates. It becomes, then, an inter- esting problem to settle the genetic relationships between the two sub-classes. Did the order of apes descend from the ape-like marsupials, the monodelphian carnivora from the didelphian car- nivora, the higher rodents from the marsupial rodents, and so on ? If so, it is difficult to see how the pouch should have been lost, and the placenta developed in so many different orders independently : such a number of exact coin- cidences seem hardly probable. On the other hand, did all the monodelphia descend from one didelphian form ? If so, it is strange that the differentiation into orders should have gone on so similarly in the two sub-classes, resulting, for example, in the production of marsupial mice which in general appearance are hardly distin- guishable from placental mice. Birds and reptiles present an equally puzzling cross-relation. Upon no theory are these the direct ancestors of mammals, although the low- est mammals are both bird-like and reptilian in appearance. The duck-bill, belonging to the mammalian sub-class of ornithodelphia, some- 73 COSMIC PHILOSOPHY what resembles a lizard with a bird's beak. Em- bryology shows that the three classes are diver- gent offshoots from an amphibious or batra- choid ancestor ; but the birds and the reptiles resemble each other much more closely than either resembles the mammalia, so that Profes- sor Huxley joins them together in the super- class or province of sauroids. So far all is plain ; but when we inquire by what forms the birds and reptiles are linked most closely together, we are met by a difficulty. Birds are divided into two sub-classes : the ostrich, cassowary, emeu, dinornis, etc., are grouped together as struthious birds, while all other existing forms belong to the sub-class of carinate birds. Now until quite lately it was supposed that all birds were descended from an extinct reptilian form like that ancient reptile, the flying pterodactyl. For the resemblances in structure between the pterodactyls and the carinate birds are striking enough to have suggested an immediate com- munity of origin. Nevertheless, within the past seven years, a much stronger case has been made out in favour of the descent of the stru- thious birds from large reptilian forms akin to the dinosauria, — of which extinct order the member most commonly known is the gigantic iguanodon. Now here, says Mr. Mivart, is a dilemma just like the one which confronted us in the case of mammals. If all birds started 74 ADJUSTMENT, DIRECT AND INDIRECT from the pterodactyl, why do the struthious birds so strongly resemble a totally different rep- tile ? If all birds started from a dinosaurus, why do the carinate 'birds so strongly resemble the pterodactyl? If we try to split the difference, and say that the carinate birds started from the pterodactyl, while the struthious birds started from the dinosaurus, the difficulty is immensely increased. For then the question arises, how could the struthious and the carinate birds, start- ing from such different points, have come to resemble each other so strongly ? Mr. Mivart is careful to state that these zo- ological cross - relations do not constitute an obstacle to the theory of evolution. They are difficulties only on the theory that organic evo- lution has been solely caused by the natural selection of fortuitous variations. To make this more clear, let us provisionally accept one of each of the pairs of alternatives offered by the two cases just described. Let us agree, with Professor Haeckel, that all the monodelphian mammals have come from one didelphian ; and let us agree, with Professor Huxley, that the kinship between birds and reptiles is closest in the case of the struthious birds and the dinosau- rians. Now we are obliged to maintain that the original monodelphian branched off into a dozen or more forms, of which six or seven happen to agree remarkably, in general appearance and in 75 COSMIC PHILOSOPHY habits of life, with six or seven of the forms into which the original didelphian had at an earlier date branched off. And we are also obliged to maintain that the remarkable shoulder-struc- ture of the pterodactyl, in which it agrees so closely with the carinate birds, was independ- ently evolved and has a purely physiological sig- nificance. That is to say, the resemblance of the pterodactyl to carinate birds is a secondary adaptive resemblance, like the less marked re- semblance of bats to birds, or like the resem- blance of a porpoise to a fish. And this view, which seems to be Professor Huxley's, is ren- dered probable by the fact that in wing-structure the pterodactyl differs from birds in much the same way that a bat does. We are now extricated from our imbroglio with regard to classification, but we are still left confronted with the difficulty of supposing that the natural selection of casual variations can so often have resulted in producing whole orders of closely resembling animals from distinct an- cestral orders. Other facts, brought up by Mr. Mivart, still further increase the apparent diffi- culty. The most important of all these relate to the development of the higher organs of sense in the three sub-kingdoms of annulosa, mol- lusks, and vertebrates. Coincidences between the members of any one of these sub-kingdoms and the members of the others are not to be 76 ADJUSTMENT, DIRECT AND INDIRECT attributed to community of origin. No natu- ralist supposes that an annulose animal, or a true mollusk, has ever been developed into a verte- brate. And while the mollusks and vertebrates appear to have diverged from a molluscoid an- cestor akin to the still-living ascidians, the annu- lose sub-kingdom has a totally different pedi- gree. To discover any likeness between the two great groups, we must follow them back to those remotest ancestors who possessed hardly any distinctively animal characteristics. Bearing all this in mind, it is a striking fact that the eye of the cuttle-fish, which is the highest of mol- lusks, appears to be constructed like the eyes of vertebrates. It apparently contains not only a similar retina, but also a lens, the choroid and sclerotic tunics, and the vitreous and aqueous humours. Now this coincidence cannot be due to community of inheritance, for the vertebrate and molluscous sub-kingdoms are linked to- gether only at their lowest extremities, and while the lowest vertebrate has an eye far infe- rior to the one just described, the molluscoid ascidians have merely rudimentary eye-spots. The coincident structures have therefore been independently developed. Again, Mr. Mivart urges that the agreement cannot be explained on the assumption " that the conditions requi- site for effecting vision are so rigid that similar results in all cases must be independently ar- 77 COSMIC PHILOSOPHY rived at ; " for the eyes of the higher insects, which are excellent visual organs, differ very widely in structure from those of the cuttle-fish and the higher vertebrates. Here, therefore, is a difficulty ; and it is still further increased if the alleged fact be true, that there is a simi- larly close correspondence between the auditory structures in the vertebrates and in the cuttle- fish. In presenting these difficulties I have closely followed Mr. Mivart, whose scientific argu- ments are usually stated with a clearness and precision which one would gladly see paralleled in the philosophic discussions by which they are supplemented. I have selected these arguments because they seem to me to constitute the strongest portion of the case which Mr. Miv- art has brought to bear against the theory of natural selection — and also because by seeing whither they tend, we shall begin to see how the theory of natural selection must be sup- plemented, before it can become a complete explanation of the phenomena with which it deals. Now we must at the outset admit that nat- ural selection must act upon every individual variation which is distinctly advantageous or in- jurious to the species, — always preserving the former and rejecting the latter. This process must equally go on, whether the variation is a 7» I ADJUSTMENT, DIRECT AND INDIRECT lere idiosyncrasy, such as we call fortuitous, or Ihether it is one that is manifested simultane- ously by a large number of individuals, so that ,^^ may be traced to causes acting upon them all '^Bi common. Now this latter case is the one ^Hhich must here be taken into the account. If ^^ large number of individuals may simultane- ously vary in a given direction, and if this may often happen within the limits of single genera- tions, it is obvious that we have here a factor of specific change not to be lightly passed over. In estimating the effects of natural selection upon a number of variations which are, quite legiti- mately, taken for granted, we must not forget to generalize the variations in connection with some common cause to which they may be assignable. Now it cannot be denied that in any single generation of organisms variations are very likely to occur, throughout nearly the whole number of individuals, which are due to the direct adaptation of the species to its envi- roning circumstances. When exhibited in the effects wrought upon the human constitution by exposure to changed physical conditions, such variations are known as acclimatization. Within the infinitesimal period of two centuries the English race in America has come to differ per- ceptibly, though very slightly, from the Eng- lish race in Europe ; and this very slight differ- ence, which cannot be explained by the much 79 COSMIC PHILOSOPHY overrated hypothesis of the infusion of foreign blood, and which certainly cannot be traced to natural selection, must be almost wholly due to direct adaptation to new physical and social conditions. Of kindred import is the fact that " twenty-nine kinds of American trees all differ from their nearest European allies in a similar manner, having leaves less toothed, buds and seeds smaller, fewer branchlets, etc." So M. Costa states " that young shells taken from the shores of England and placed in the Mediterra- nean at once altered their manner of growth, and formed prominent diverging rays like those on the shells of the proper Mediterranean oys- ter." We have seen that the direct action of physical agencies will by no means account for the chief features of colouring in the organic world ; yet it appears to be true that members of the same species of birds are more brightly coloured when living in a clear dry atmosphere than when living near the coast. So, too, in the contour of their wings, the various butterflies of Celebes all show parallel divergences, inex- plicable by natural selection alone, from kindred species in Java and India. And a host of like facts concerning these insects are cited by Mr. Mivart from Mr. Wallace's essay on the Ma- layan Papilionidae. More examples might be cited if this work were intended to be a scien- tific treatise on Darwinism ; but for the compre- 8q ADJUSTMENT, DIRECT AND INDIRECT tension of the present point, in its philosophic tarings, these illustrations will suffice.^ Facts of this kind point to the conclusion fhat an inherent capacity for adaptive changes possessed by all organisms. And by the ihrase " inherent capacity " I do not mean to Insinuate the existence of any occulta vis^ or letaphysical " innate power," of which no sci- mtific account is to be given in terms of mat- ter and motion. An organism is a complex jystem of forces ; even the simplest living patch >f protoplasm is a highly complex system, but in the higher organisms the complication of Forces is almost infinite, when compared with >ur limited powders of analysis. Now such a ''Stem of forces must, under penalty of over- throw, maintain both its internal equilibrium md its equilibrium with external incident forces. .nd this double maintenance of equilibrium lecessitates a rhythmical redistribution of forces from moment to moment, of which, as was jhown in the chapter on rhythm, the result lust be continual change. Now the internal jquilibration of the forces in the organism with ich other is generalized in the laws of growth. ^ [Since the appearance of the discussions of Weissman, the juestions here touched upon by Fiske have assumed wholly lew forms, and have given rise to an immense literature. For Jpencer's later expression and defence of his views, see his ?/jtfji/. Library Edition, vol. i. p. 388-478.] L. Ill o I COSMIC PHILOSOPHY development, and heredity ; while the external equilibration of the forces in the organism with environing forces is generalized in the laws of variation and adaptation. As the result of the former process, all organisms tend to assume cer- tain typical forms, as inevitably as crystals. In the case of the lowest organisms the forms as- sumed may be possibly due to the operation of chemical polarity similar (though much more involved) to that which gives form to crystals. In all but the lowest organisms the forms as- sumed are the expression of tendencies due to the cooperation of countless ancestral forces, and such tendencies are now not improperly classified under the head of " physiological polarity,'* — provided that nothing more is meant by "po- larity " than the ability of certain special groups of forces to work different structural changes in different directions. So much for the internal adaptive process. But now, as the result of the parallel process of external adaptation, it follows * that the forms due to the internal process can remain constant only so long as the environ- ment remains unchanged. If the changes in the environment are too great or too sudden to be equilibrated by changes in the distribution of the system of internal forces, the system is overthrown, and the organism perishes. But if the external changes are moderate and grad- ual, the adjustment of the organism to them by 82 ADJUSTMENT, DIRECT AND INDIRECT means of internal changes must result in that kind of organic variation known as direct adap- tation. We need not be surprised, therefore, by the parallel variations of whole genera of American trees or Malayan butterflies — nor need we ascribe them, with certain recent writers, to " occult energies " of the metaphysical sort, or to a kind of pantheistic " intelligence " in- herent in nature, or to any other agency unre- cognizable by science ; since the necessity for such parallel variations, wherever .whole groups of organisms are exposed to like environing agencies, is a corollary from the fundamental principles of vital dynamics. We are now in a position to amend quite materially the view thus far taken of the causes of organic evolution. Hitherto we have con- cerned ourselves too exclusively with the selec- tion of variations, omitting to inquire into the character and mode of origin of the variations selected. But the latter point is no less im- portant than the former. If variations might occur equally in all directions from the aver- age standard, by reason of circumstances so in- definitely compounded as to make them seem fortuitous, then the natural selection of such variations might well be pronounced incapable — save in very rare instances — of working en- tirely analogous results in organisms so geneti- cally distinct as monodelphians and didelphians, 83 COSMIC PHILOSOPHY or as vertebrates and mollusks. In other words natural selection, acting upon such fortuitous individual variations, would tend to produce indefinitely increasing differentiations in many directions. Such differentiations are to be seen in the amazingly elaborate contrivances for the fertilization of orchids, the explanation of which is one of Mr. Darwin's most brilliant achieve- ments. But when it is admitted that a great number of similar adaptive variations must be simultaneously occurring in the same direction, then it is obvious that the natural selection of such variations may often produce analogous results in different genera and families, or even in different orders, classes, or sub-kingdoms. Mr. Mivart alleges the many resemblances be- tween whales and the ancient ichthyosaurians as hardly explicable on the theory of the selec- tion of fortuitous variations. But when we recollect that the vertebrate structure of mam- mals is at the outset homologous with that of reptiles, and that direct adaptation must of it- self tend to produce similar variations alike in mammals and in reptiles which pass from a terrestrial into an aquatic environment, the re- semblance between a whale and an ichthyosaurus ceases to be an enigma. The superficial resem- blance of a whale to a fish is a fact of like na- ture. And in the case of amphibious carnivora, like the seal, direct adaptation to a partially 84 ADJUSTMENT, DIRECT AND INDIRECT marine environment has aided in producing fish-like limbs, while it has not interfered with the general likeness of the animal to certain families of land carnivora. So in the case of the pterodactyl as compared with carinate birds, we begin with skeletons constructed on the same plan, and we may expect to find that di- rect adaptation to the necessities "of flight will tend to produce similar modifications of the shoulder structure. But since, before the ap- pearance of pterodactyls, the dermal covering of reptiles was very likely as different from that of birds as it is now, so that a reptilian wing could not be formed by a modification of the dermal covering, we find, naturally enough, the wing of the pterodactyl formed, like that of the bat, by a modification of the skeleton. And this fact seems to justify us in the alternative which we have accepted, that the likeness of the pterodactyl to birds is no proof of imme- diate kinship, but only of secondary adaptive variation, as in the case of bats. A similar argument applies to the numerous likenesses between the higher mammals and the marsu- pials. At an ancient epoch the marsupials were a dominant race of animals, extending all over the world. But since they have been almost everywhere exterminated by their hardier mo- nodelphian descendants, there is no difficulty in the view that direct adaptation to similar differ- 8s COSMIC PHILOSOPHY ences of environment, when aided by natural selection, has brought about a differentiation of the higher mammals analogous to that which had formerly taken place among the marsupi- als. That six or seven orders of monodelphi- ans should vary in the same direction with six or seven orders of didelphians is no more sur- prising than that twenty-nine kinds of Amer- ican trees should all differ in the same direction from their European congeners. It is certainly far less surprising than would be the simultane- ous loss of a pouch and acquirement of a pla- centa by a host of marsupial genera scattered all over the earth. Pursuing the argument a step farther, we may begin to understand, in a general way, even the similarity of the eye of a cuttle-fish to the eye of a vertebrate. Utterly unlike a vertebrate in general structure, — and so remotely akin that for all practical purposes of argument the kin- ship is of no account, — if a cuttle-fish could be shown to possess numerous points of special re- semblance to a vertebrate, the fact would be an obstacle to any theory of the origin of organic forms. But the only special resemblances which are found to exist are those between the eyes and the ears. Now these are organs in which such variations as occur must be in a preeminent degree directly adaptive. The eye, for example, contains an optical apparatus of which the func- 86 ADJUSTMENT, DIRECT AND INDIRECT tion is the concentration of rays of light into a focus upon the retina. Such is the function dis- charged by the lens, and the vitreous and aque- ous humours. Now, while the compound eyes of insects show us that this function c^n be dis- charged in more than one way, a brief consider- ation of the optical conditions in the case would show that it can only be accomplished in a few ways. Not only does the passage of the light directly tend to set up molecular rearrange- ments in the refracting matter which lies before the retina, but out of those rearrangements there are very few which can assist the focalizing pro- cess ; so that natural selection, in preserving the best-refracting eyes, would have but very few directions in which to act. The anterior mem- brane might differentiate into a number of con- verging lenses, as in the higher annulosa, but if such a differentiation did not occur, it is diffi- cult to see how the needful refraction could be secured, save by the differentiation of the succes- sive strata which we call the aqueous, crystal- line, and vitreous humours. This may serve to indicate the course of explanation to be taken. The physical conditions for securing very effi- cient vision being thus limited, and direct adap- tation being such an important factor in the pro- cess, it does not seem at all strange that two eyes quite similar in structure should be independ- ently produced. A precisely similar argument 87 COSMIC PHILOSOPHY will apply to the case of the ear. And the force of these considerations is still further increased when we learn from Professor Gegenbaur that the resemblances between the eyes of vertebrates and the eyes of cuttle-fishes are only superficial analogies, and not fundamental homologies, as Mr. Mivart's very exaggerated statement might lead one to suppose. In all these cases, here too briefly summed up, natural selection must of course be regarded as steadily cooperating with direct adaptation. No matter whether individual variations are directly called forth by environing agencies, or are due to internal causes, in our ignorance of which we call them fortuitous, they must equally be the objects of natural selection wherever they influence, in the slightest degree, the individ- ual's chances of survival. Thus the theory of natural selection is not superseded, but supple- mented, by the class of considerations here sug- gested by Mr. Mivart's objections. Ordinarily, if not always, the two processes must go on in concert ; and while the frequent occurrence of directly adaptive changes must greatly accelerate the operation of natural selection, on the other hand natural selection, by weeding out all cases of retrograde variation, must complete the work of direct adaptation. There are, however, some conspicuous in- stances in which natural selection seems to play 88 ADJUSTMENT, DIRECT AND INDIRECT either a very subordinate part, or none at all. As we have just been considering eyes and ears, let us once more return to them, to show how certain peculiarities in their structure must be chiefly due to directly adaptive changes. Within the human ear, firmly fastened in the temporal bone, is a spirally coiled chamber, known as the cochlea. Within this chamber there is a very elastic membrane, and on it lie the so-called fibres of Corti, which are a series of fibrous fila- ments placed side by side, with great regularity, so as to present somewhat the appearance of the keyboard on a piano. It is now held by phy- siologists that this row of fibres is really a key- board, and that each fibre is set in vibration only by a particular musical note, exactly as an A-tuning-fork is set vibrating when A is sounded near it, but not when any other note is sounded.^ The auditory nerve, in passing into the cochlea, branches into an immense number of nerve filaments, each of which communicates with ofie of the keys of this ear-piano. So that when A is sounded on a musical instrument, the A-key within the ear vibrates, and transmits its vibrations to a special filament of the auditory ^ [The hypothesis here stated has since been altered in cur- rent literature in the sense of regarding, not the rods of Corti, but the fibres of the basilar membrane as constituting the "key-board" in question. Fiske would have modified this passage accordingly.] 89 COSMIC PHILOSOPHY nerve. If this view be correct, we have here a truly marvellous instance of differentiation. But now in what way can this structure have ever been useful to human beings in the struggle for life ? Doubtless a considerable power of discrimi- nating sounds is useful to any animal, but of what use can it be to distinguish between A and A-sharp ? We may safely conclude, I think, that survival of the fittest has played quite a secondary part in this case. The explanation must be sought in the direct effects wrought by auditory vibrations upon the molecular struc- ture of the cochlear fibres. And it is a system of effects which has not even yet been wrought in its present completeness save among highly civilized people. A savage cannot distinguish the slight variations in pitch by which our ears are delighted. And even among ourselves there are ears which can neither in melody discrimi- nate between the ascending and the descending gamut, nor in harmony distinguish between the mellifluous tonic chord and the harsh inversions of the minor ninth. The defect may be com- pared to that of colour blindness, although it is probably more common because the ear has been far less thoroughly trained than the eye. Now when we consider how much can be ef- fected by individual training in enabling a mod- erately good ear to discriminate between quarters, eighths, and smaller fractions of a tone, and bear 90 ADJUSTMENT, DIRECT AND INDIRECT in mind that this training must consist in the further differentiation of the sensitive cochlear fibres, we have a strong argument in favour of the production of this wonderful structure by direct adaptation alone. Concerning the human eye I need only say that in the retina it presents a structure closely analogous to the ear-piano just described. The chief layer of the retina is composed of little rods of nerve tissue, packed closely together like organ pipes ; and it is probable that each of these rods vibrates in unison with a particular ray of light.' Here is a case of extreme differentiation just like that witnessed in the ear ; and substan- tially the same argument will apply to it. The survival of a primeval savage in the struggle for life would certainly depend to a considerable ex- tent on his ability to discriminate certain col- ours as well as outlines by the eye, as also upon his ability to recognize the timbre or quality of certain sounds. But the power of distinguishing the delicate shades in a painting of Correggio ^ This is the opinion of Helmholtz, the greatest living au- thority ; and it is strengthened by Dr. Brown-Sequard's dis- covery of the number of fibres in the spinal cord v^^hich are specialized for the reception of particular sensations. [The passage in the text above, and in this note, regarding the func- tions of the retina, would have been greatly modified had Fiske rewritten it in the light of recent knowledge. The the- ory of the colour sensations has been much changed by the researches since Helmholtz.] 91 COSMIC PHILOSOPHY could be no more useful, from a zoological point of view, than the power of appreciating the most subtle harmonic effects in a symphony of Schu- mann. For this extreme differentiation there would seem to be no assignable cause save the direct action of luminous waves upon the won- derfully sensitive and responsive nerve tissue of civilized men. Were it needful for the further illustration of our position, I might show how Mr. Spencer has proved that the structure of vertebral col- umns is also primarily due to directly adap- tive changes. Many peculiarities in the shapes of plants and animals are probably thus to be explained. And in regard to the hues of or- ganisms— those phenomena which are so beau- tifully explained by the Darwinian theory — there are some exceptions to be cited. The magnificent tints of many corals, of certain cat- erpillars, and of the shells of sundry mollusks, must undoubtedly be due to the direct work- ing of such chemical affinities as produce our wonderful aniline dyes, or the rich tints of our American autumn woods. But passing over all these interesting points, enough has been said to show that there are many phenomena of organic evolution which natural selection, when considered alone, will not suffice to account for. But with the amend- 92 ADJUSTMENT, DIRECT AND INDIRECT ments now agreed upon, there may be framed an outline of a tolerably complete classification of agencies. Let us reduce to a common form of expression the agencies contemplated in this and in the two preceding chapters. Considered in the widest sense, the processes which we have seen to cooperate in the evolution of organisms are all processes of equilibration or adjustment. From the dynamical point of view, as has been shown in previous chapters, an organism is a complex aggregate of matter, in which permanent structural and functional differentiations and integrations are rendered possible by the fact that it continually receives about as much motion as it expends. Now a state in which expended motion is continually supplied from without is called a state o^ de- pendent moving equilibrium. In other words, it is a state in which every change in the dis- tribution of external forces must be met by a change in the distribution of internal forces, in order that the equilibrium may be preserved. This is the case with every organism. Its life is a perpetual balancing of external forces by internal forces. And the complete accomplish- ment of this end requires also that there shall be a continuous internal equilibration, — a per- petual balancing of forces operative in the dif- ferent parts of the organism. Thus the career 93 COSMIC PHILOSOPHY of an organism, or of a group of organisms, con- sists of two kinds of equilibration, which we may briefly designate as external and internal equilibration. And a moment's consideration will show us that each of these kinds of equili- bration may be either direct or indirect. The adjustment of a group of organisms to changing external circumstances is effected partly by such direct adaptations as we have above considered, partly by the destruction of all those members of the group which do not become directly adapted. In this latter way equilibrium is maintained in- directly ; and natural selection, or survival of the fittest, may be accurately characterized as " indirect equilibration." Turning now to the internal processes, we see that direct equilibra- tion which consists in continually arranging all the units of the organism in accordance with their physiological polarities exemplified alike in heredity and in correlation of growth. On the other hand, the dwindling and final eva- nescence of organs which are disused is due to the fact that the nutritive material is all needed by the other organs which are in constant use ; and it may accordingly be regarded as an indi- rect method of preserving the internal equili- brium of the organism. The process of organic evolution may therefore be summarized as fol- lows : — 94 ADJUSTMENT, DIRECT AND INDIRECT i Equilibration p. . r Direct Adaptation. X erna < indirect Natural Selection, P , \ I Correlation of Growth. (^ Indirect Use and Disuse, Here we have a classification of agencies co- extensive with our present knowledge of the subject, and sufficiently comprehensive to in- clude such factors in the problem as may here- after be discovered. Under one of these four subdivisions every special process concerned in forwarding organic evolution must be included. For since it is admitted on all sides that specific change is due to the necessity for maintaining equilibrium between the organism and the en- vironment, it follows that every process which results in the modification of species must be a process of adjustment or equilibration, either external or internal, direct or indirect. In the scientific treatment of the problem, there is room for much beside natural selection, but there is no room for occulta vires, or pantheis- tic intelligences, or for " tendencies," save such as may be expressed as the unneutralized sur- plus of forces acting in a particular direction. But we have now done something more than merely to classify the causes of organic evolu- tion. In the act of classifying these, we have arrived at the law or formula which expresses the chief characteristic of organic evolution. 95 COSMIC PHILOSOPHY We have reached the all-important truth that the progress of life on the globe has been the continuous equilibration of the organism with its environment. We need now only go a step farther in order to obtain a formula which will not only express the distinguishing characteristic of Life itself, but will also serve as an immedi- ate basis for our inquiries into the phenomena of mind and of society. 96 CHAPTER XIII LIFE AS ADJUSTMENT* ONE of the cardinal propositions of Mr. Spencer's system of philosophy is the definition of Life, first published in 1855, ^^ ^^^ "Principles of Psychology," but now transferred to the first volume of his " Principles of Biology." According to Mr. Spencer, the continuous maintenance of an equilibrium between the organism and its envi- ronment is the process in which life essentially consists. Life — including also intelligence as the highest known manifestation of life — is the continuous establishment of relations within the organism, in correspondence with relations existing or arising in the environment.^ Out ^ [See Introduction, § 19.] 2 The full definition runs thus : *< Life is the definite com- bination of heterogeneous changes, both simultaneous and suc- cessive, in correspondence with external coexistences and sequences.'* This is incomparably the most profound and complete definition of Life that has ever been framed ; and the chapter in which it is set forth and illustrated would alone en- title Mr. Spencer to a place among the greatest thinkers that have ever lived. The objection has indeed been raised, in metaphysical quarters, that this is a definition, not of Life, but VOL. Ill 97 LIFE AS ADJUSTMENT of the host of illustrations by which this formula is justified, it will be sufficient for our present purpose to select but one or two. " The sting- ing and contractile powers of a polyp's tentacle correspond to the sensitiveness and strength of the creatures serving it for prey. Unless that external change which brings one of these crea- tures in contact with the tentacle were quickly followed by those internal changes which result in the coiling and drawing up of the tentacle, the polyp would die of inanition. The funda- mental processes of integration and disintegra- of the circumstances or accidents in which Life is manifested. Concerning this objection, we may content ourselves with the following remarks by Mr. Lewes. Both Life and Mind, says Mr. Lewes, are processes. ** Neither is a substance — neither is a force. To speak of Vitality as a substance would shock all our ideas ; but many speak of it as a force. They might with equal propriety hold Mortality to be a force. What, then, is meant by Vitality, or vital forces ? If the ab- stracdon be resolved into its concretes, it will be seen that a certain process, or group of processes, is condensed into a simple expression, and the final result of this process is trans- posed from a resultant into an initial condition, the name given to the whole group of phenomena becomes the personification of the phenomena, and the product is supposed to have been the producer. In Heu of regarding vital actions as the dyna- mical results of their statical conditions, the actions are person- ified, and the personification comes to be regarded as indicating something independent of and antecedent to the concrete facts it expresses." Problems of Life and Mind, vol. i. p. no. 98 LIFE AS ADJUSTMENT tion within it would get out of correspond- ence with the agencies and processes without It ; and the Hfe would cease/' So in higher ani- lals, " every act of locomotion implies the ex- fpenditure of certain internal mechanical forces, [adapted in amounts and directions to balance or out-balance certain external ones. The re- cognition of an object is impossible without a [harmony between the changes constituting per- ception, and particular properties coexisting in ithe environment. Escape from enemies sup- [poses motions within the organism, related in kind and rapidity to motions without it. De- Istruction of prey requires a particular combina- rtion of subjective actions, fitted in degree and succession to overcome a group of objective ^ones. And so with those countless automatic processes exemplified in works on animal in- stinct." ^ And similarly, as will appear still more :learly when we come to treat especially of the [evolution of intelligence, " the empirical gen- jcralization that guides the farmer in his rotation >f crops, serves to bring his actions into con- fcord with certain of the actions going on in ►lants and soil ; and the rational deductions of :he educated navigator who calculates his posi- tion at sea, constitute a series of mental acts by 1 [Spencer, Principles of Biology, vol. i. Part I. chap- Jr V. § 28.] 99 COSMIC PHILOSOPHY which his proceedings are conformed to sur- rounding circumstances." ^ We practically recognize the truth of this definition of life when we attempt to ascertain whether an animal is dead or alive by poking it with a stick. If it responds by motions of its own, we judge it to be alive ; if it merely moves as the stick pushes it, we judge it to be dead. So we decide whether a tree is alive or dead by observing whether the increased supply of solar radiance in spring causes those internal motions which result in the putting forth of leaves. In these cases we recognize the truth "that the alteration wrought by some environing agency on an inanimate object does not tend to in- duce in it a secondary alteration, that anticipates some secondary alteration in the environment. But in every living body there is a tendency towards secondary alterations of this nature ; and it is in their production that the' correspond- ence consists." This formula for vital phenomena is further illustrated and justified by the fact that the de- gree of life is low or high, according as the correspondence between internal and external relations is simple or complex, limited or ex- tensive, partial or complete, imperfect or perfect. The lowest forms of life respond only to the ^ [Spencer, Principles of Biology, Part I. chapter v. §28.] 100 LIFE AS ADJUSTMENT ^simpler and more homogeneous changes which iffect their total environment. The relations established within a plant answer only to the >resence or absence of a certain quantity of light and heat, and to the chemical and hy- rrometric relations existing in the enveloping itmosphere and subjacent soil. In a polyp, be- jides general relations similar to these, certain iore special relations are established in corre- spondence with the external existence of me- :hanical irritants ; as when its tentacles contract in being touched. The increase of extension icquired by the correspondences as we ascend :he animal scale may be seen by contrasting :he polyp, which can simply distinguish be- tween soluble and insoluble matters, or between opacity and translucence, in its environment, ith the keen-scented bloodhound and the far- jighted vulture. And the increase of complexity lay be appreciated by comparing the motions respectively gone through by the polyp on the ►ne hand, and by the dog and vulture on the ►ther, while securing and disposing of their >rey. In the next chapter it will be shown that the advance from lower to higher forms of life :onsists in the orderly establishment of relations dthin the organism, answering to external re- lations of coexistence and sequence, that are rontinually more special, more remote in space ind in time, and more heterogeneous ; until at lOI COSMIC PHILOSOPHY last we reach civilized man, whose intelligence responds to every variety of external stimulus, whose ordinary needs are supplied by imple- ments of amazing complexity, and whose men- tal sequences may be determined by circum- stances as remote as the Milky Way and as ancient as the birth of the Solar System. When viewed under this aspect the phe- nomena of life and of intelHgence are so simi- lar that it is difficult to keep them separate in our series of illustrations. As we proceed to treat of psychology, we shall much better ap- preciate the importance of the truth which I am now expounding. Restricting ourselves here, as far as possible, to physiological illustrations, let us note that in any organism life continues just so long as relations in the environment are balanced by internal relations, and no longer. The difference in result between a jump from a horse-car and a jump from an express train running at full speed depends simply on the difference in the ability of the contracting mus- cles to neutralize a small or a large quantity of arrested momentum. The motor energy with which the head is carried forward until it strikes the ground is exactly the surplus of external force to which the organism has failed to op- pose an internal force. If the resulting concus- sion of the brain is not so great as to induce in- stant death, but only causes inflammation, with 1 02 LIFE AS ADJUSTMENT temporary loss of consciousness, then the con- ^nuance of life will depend upon the ability of le molecular forces within the organism to inng about a redistribution of matter and mo- ion which shall balance the sudden redistribu- ion caused by the blow. Dynamical pathology *gards all diseases as disturbances of the inter- lal equilibrium of the organism, and recovery the restoration of the equilibrium. The avoid- Ince of danger is the coordination of certain actions in anticipation of more or less complex relations about to arise without. If disease and danger be successfully avoided, the death which ensues in old age is due to the diminished plas- ticity of the organism which renders it incapable of responding to external changes. As we saw when treating of the primary aspects of Evo- lution and Dissolution, the evolution of the body, even to the close of life, is character- ized by the integration of its constituent matter, shown in the increasing proportion of solids to fluids, which makes the bones brittle, the mus- cles stiff, and the nerves sluggish. Death from old age ensues just when the consequent molec- ular immobiHty has reached the point at which incident forces can no longer be balanced by internal rearrangements. A paragraph will suffice for the exposition of this formula of life in connection with the gen- eral law of evolution. That the evolution of 103 COSMIC PHILOSOPHY life upon the earth, beginning with innumerable jelly-like patches of protoplasm, like the mo- nera discovered by Professor Haeckel, and end- ing with more than two million species of plants and animals such as naturalists classify, has been a change from homogeneity to heterogeneity, will be denied by no one. Nor is it needful to repeat, save for form's sake, what was sufficiently illustrated in an earlier chapter, — that the higher forms are also those in which the various orders of integration are most completely ex- emplified. We need only to note that the con- tinuous adjustment of the organism to its en- vironment, in which process we have seen that life consists, must necessitate both the differen- tiation of the organism and the integration or definite combination of the changes which con- stitute its activity. For as the life becomes higher the environment itself increases in hete- rogeneity as well as in extent. The environ- ment of a fresh-water alga is, as Mr. Spencer remarks, limited to the ditch or pool in which the alga lives. The acaleph borne along on a wave of the sea has a much more homogeneous environment than the caterpillar which crawls over leaves ; and the actions by which the cat- erpillar must "meet the varying effects of grav- itation '' are far more heterogeneous than the actions of the acaleph. In the case of the higher animals, not only is their environment extremely 104 LIFE AS ADJUSTMENT ^Hf adjacent organisms which stand to them in ^^he relations of enemies, competitors, or prey ; but it also presents highly coordinated actions on the part of these organisms, which must be met by highly coordinated actions on the part of the former. Thus with the increase of the organism in heterogeneity, definiteness, and co- herence, its environment increases in heteroge- neity and presents more definite and coherent relations to which the organism must adjust it- self. And in this way the heterogeneous, defi- * nite, and coherent activity of the organism is again enhanced. The corollary from this group of truths is one which will nearly concern us when we come to treat of the Evolution of So- ciety : it is this — the greater the amount of progress already made, the more rapidly must progress go on. 105 CHAPTER XIV LIFE AND MIND^ BEFORE we proceed to treat of physical life as the continuous establishment of subjective relations that are in corre- spondence with environing objective relations, we must dispose of certain questions which have been raised by Comte and his disciples concern- ing the right of psychology to be regarded as an independent science. Part of Comte's plan for the renovation of philosophy was the rescuing of psychology from the exclusive control of metaphysicians. The manner in which he pro- posed to accomplish the rescue is only too briefly described ; he simply denied in toto the claims of psychology to be regarded as an in- dependent science. According to Comte there can be no science, worthy of the name, founded upon the observation and comparison of states of consciousness ; and psychology must there- fore be studied as a part of biology, by the aid solely of the methods used in biology. That is, the study of mind must be reduced to the study of nervous phenomena simply. It is easy ^ [See Introduction, § 20.] 106 LIFE AND MIND to say that the inevitable outcome of this is the unquaHfied assertion of materialism. But as Comte himself never drew such an inference, and always protested energetically against ma- terialism, as based upon illegitimate inferences from the study of nervous phenomena, it would not be fair in us to draw the inference for him and then upbraid him with it. This kind of misrepresentation is dear to theologians, and we may contentedly leave them an entire monopoly of it. But worse remains behind. Having condemned psychological analysis as useless, Comte offers us in exchange the ludicrous sub- stitute — Phrenology ! Of all the scientific blunders which Comte ever made, this was beyond question the one which has done most to injure his credit with competent scientific critics. Yet in fairness we must remember that Comte^s ignorance of psy- chology was his weakest point, and that forty years ago, when the anatomy and physiology of the nervous system were in their infancy, the conception of dividing the gray surface of the cerebrum into thirty or more provinces, each the seat of a complex group of mental ap- titudes, did not seem so absurd as it does now. In those days even Broussais, a first-class phy- siologist, adopted some of the leading doctrines of phrenology. Moreover the fundamental conception of Gall — which included the ana- 107 COSMIC PHILOSOPHY tomlcal comparison of all animal brains, in con- nection with the study of the mental character- istics of animals — was a noble conception; though in working it out he showed himself lamentably ignorant of the plainest rules of in- duction. The purposes of our inquiry do not render it necessary for me to discuss the merits of a hypothesis which has long since ceased to be of any interest, save as an episode in the early history of physiological psychology. Those who wish to see the question treated critically may be referred to the works of Miiller, Val- entin, Wagner, Vulpian, Gratiolet, Longet, and especially of Lelut ; to the appendix to Hamil- ton's " Lectures on Metaphysics ; " to the chap- ter on Gall in Mr. Lewes's " History of Phi- losophy ; " and to Mr. Bain's treatise on " The Study of Character." It is not Comte's acceptance of phrenology, but his denial of psychology, which here con- cerns us. The former is merely a personal question, bearing upon Comte's scientific com- petence ; the latter is a question of general in- terest. We may note at the outset that many contemporary positivists differ from Comte on this point. It is generally agreed that a science may be founded, even if it has not already been founded, upon the observation and comparison of states of consciousness ; though there is some disagreement as to the position of that science io8 LIFE AND MIND with reference to the other sciences. Mr. Lewes, for instance, misled by his general ad- herence to the Comtean classification of the sciences, regards psychology as a subdivision of biology, on the ground that the phenomena of consciousness are merely a special division of the phenomena of life. This is, in one sense, true ; so true, indeed, as to be fatal to the con- clusion which it is meant to support. For it may be said, with equal truth, that the pheno- mena of life are but a subdivision of the phe- nomena presented by the surface of our con- tracting and cooling planet ; so that it might equally well be argued that biology is only a subdivision of geology. And again it may be said that geologic phenomena are only a sub- division of the general phenomena presented by the condensation of a nebula ; so that geo- logy is only a branch of astronomy. Yet it could hardly be said that psychology is a mere branch of astronomy ; so that here we seem to have reached a reductio ad absurdum. But by travelling back over the course we shall get out of the difficulty, and not only see why- psychology has as good a right as any other branch of inquiry to be ranked as an independ- ent science but also see why it must needs be partly founded upon an observation and com- parison of states of consciousness. Let us then. 109 COSMIC PHILOSOPHY having reached the primeval nebula, begin our journey backwards. Our position is explained by the considera- tion that all the synthetic concrete sciences are but adjacent tracts of one general science, — Cosmology. " Practically, however, they are distinguishable as successively more specialized parts of the total science — parts further spe- cialized by the introduction of additional fac- tors. The astronomy of the solar system is a specialized part of that general astronomy which includes our wKole sidereal system ; and be- comes specialized by taking into account the revolutions and rotations of planets and satel- lites. Geology is a specialized part of this special astronomy ; and becomes speciahzed by join- ing, with the effects of the earth's molar motions, the effects of continuous decrease in its internal molecular motion, and the effects of the molec- ular motion radiated from the sun. Biology is a specialized part of geology, deahng with peculiar aggregates of peculiar chemical com- pounds formed of the earth's superficial ele- ments — aggregates which, while exposed to these same general forces, molar and molecular, also exert certain general actions and reactions on one another. And psychology is a special- ized part of biology, limited in its application to a higher division of these peculiar aggregates, and occupying itself exclusively with those spe- IIO LIFE AND MIND cial actions and reactions which they display, from instant to instant, in their converse with the special objects, animate and inanimate, amid which they move." ^ This last point is one which requires further illustration. Concisely expressed, it amounts to this — that psychology is distinguished by deal- ing in a particular way with the relations be- tween the organism and its environment. A few illustrations will render this perfectly in- telligible — will show us that mere nervous physiology is not, and never can be, psycho- logy. Nervous physiology treats of relations sub- sisting within the organism. It explains how waves of molecular motion, set up in a nerve centre and transmitted along a nerve axis, cause contraction in the fibres of a muscle, or secre- tion in a gland, or molecular rearrangement in the substance of the tissues, or set up a new molecular undulation in some other nerve centre. It seeks to formulate the conditions under which nervous stimulation and nervous discharge take place. Or it shows how certain feelings are invariably sequent upon certain re- arrangements of the molecules composing the nerve substance. Even if it recognizes, as it does continually recognize, some force external to the organism, which causes the molecular re- ^ Spencer, Principles of Psycho logy y vol. i. pp. 137, 138. Ill COSMIC PHILOSOPHY arrangement and the resultant feeling, it never- theless does not concern itself with the relation between the external cause and the internal effect, but only with the internal effect. Now, as Mr. Spencer has forcibly pointed out, " so long as we state facts of which all the terms lie within the organism, our facts are anatomical or physiological, and in no degree psychological. Even though the relation with which we are dealing is that between a nervous change and a feeling, it is still not a psycholo- gical relation so long as the feeling is regarded merely as connected with the nervous change, and not as connected with some existence lying outside the organism. . . . For that which dis- tinguishes psychology from the sciences on which it rests is that each of its propositions takes account both of the connected internal phenomena and of the connected external phe- nomena to which they refer. In a physiologi- cal proposition an inner relation is the essential subject of thought ; but in a psychological pro- position an outer relation is joined with it as a coessential subject of thought. A relation in the environment rises into coordinate impor- tance with a relation in the organism. The thing 'contemplated is now a totally different thing. It is not the connection between the internal phenomena, nor is it the connection 112 I LIFE AND MIND between the external phenomena ; but it is the connection between these two connections, A psychological proposition is necessarily com- pounded of two propositions, of which one con- cerns the subject and the other concerns the object ; and cannot be expressed without the four terms which these two propositions imply. The distinction may be best explained by sym- bols. Suppose that a and b are two related manifestations in the environment — say, the colour and taste of a fruit ; then, so long as we contemplate their relation by itself, or as associated with other external phenomena, we are occupied with a portion of physical science. Now suppose that x and y are the sensations produced in the organism by this peculiar light which the fruit reflects, and by the chemical action of its juice on the palate ; then, so long as we study the action of the light on the retina and optic centres, and consider how the juice sets up in other centres a nervous change known as sweetness, we are occupied with facts belong- ing to the science of physiology. But we pass into the domain of psychology the moment we inquire how there comes to exist within the or- ganism a relation between x and y that in some way or other corresponds to the relation be- tween A and B. Psychology is exclusively con- cerned with this connection between a b and 113 COSMIC PHILOSOPHY X Y : it has to investigate its nature, its origin, and its meaning." ^ It is true, as the last chapter showed us, that biology also presupposes a reference to pheno- mena outside the organism, the very defini- tion of Life being " the continuous adjustment of internal relations to external relations ; '* so that Mind here appears to be but the highest form of Life. We see here the difficulty of sharply demarcating adjacent provinces of na- ture. Nevertheless there is a broad distinction, though not a sharp one. Exclude from biologi- cal problems all those adjustments which con- stitute mental reaction upon the environment, and the only external factors remaining are those general conditions of temperature, mois- ture, food and the like, which are taken for granted once for all. While in each special problem of psychology the relation between internal and external relations is the main sub- ject of inquiry, on the other hand, in special problems of biology, the relation between the internal processes and these general external factors is not the chief, but a subordinate, sub- ject of inquiry. Digestion, for instance, implies food ; and " food implies neighbouring plants or animals ; but this implication scarcely enters into our study of digestion, unless we ask the ^ Spencer, Principles of Psycholog^y vol. \. p. 132. [Part I. chapter vii. § 53.] 114 LIFE AND MIND quite special question — how the digestive or- gans become fitted to the materials they have to act upon." But a moment's introspection will make it clear to every one " that he can- not frame any psychological conception without looking at internal coexistences and sequences in their adjustments to external coexistences and sequences. If he studies the simplest act "of perception, as that of localizing a touch in some part of his skin, the indispensable terms of his inquiry are: on the one hand a thing (i) and a position (2), both of which he regards as ob- jective ; and on the other hand a sensation (3), and a state of consciousness constituting his apprehension of position (4), both of which he regards as subjective. Or, if he takes for his problem one of his complex sentiments, as that of justice, he cannot represent to himself this sentiment, or give any meaning to its name, without calling to mind actions and relations supposed to exist in the environment : neither this nor any other emotion can be aroused in consciousness even vaguely, without positing something beyond consciousness to which it refers."^ Let us observe, in passing, that these consid- erations are quite incompatible with Material- ism. The doctrine of the materialists rests partly on the assumption that the study of the laws of ^ Spencer, Principles of Psychology, vol. i. p. 133. "5 COSMIC PHILOSOPHY nervous action can give us a complete account of mental phenomena. But we have seen that to understand the simplest act of perception, we must take into the account not only the sub- jective and the objective factors, but the relation between the two. It is this relation which con- stitutes the perception. But this relation exists only in consciousness, and we cannot explain it save by direct observation of consciousness. Push our researches in biology as far as we may, the most we can ever ascertain is that cer- tain nerve changes succeed certain other nerve changes or certain external stimuli in a certain definite order. But all this of itself can render no account of the simplest phenomenon of con- sciousness. As Mr. Spencer well says, " such words as ideas, feelings ^ memories y volitions , have acquired their several meanings through self- analysis, and the distinctions we make between sensations and emotions, or between automatic acts and voluntary acts, can be established only by comparisons among, and classifications of, our mental states. The thoughts and feelings which constitute a consciousness, and are abso- lutely inaccessible to any but the possessor of that consciousness, form an existence that has no place among the existences with which the rest of the sciences deal. Though accumulated observations and experiments have led us by a very indirect series of inferences to the belief ii6 LIFE AND MIND that mind and nervous action are the subjective and objective faces of the same thing, we remain utterly incapable of seeing, and even of imagin- ing, how the two are related. Mind still con- tinues to us a something without any kinship to other things." Thus we conclude that psychology — though, from the objective point of view it may be re- garded as a branch of biology, in the same ab- stract sense in which biology may be regarded as a branch of geology, and geology as a branch of astronomy — has nevertheless an equal claim with any of these to be ranked as a distinct sci- ence. From the subjective point of view it has a superior claim to any of the others. Since here the phenomena studied are directly given in the consciousness of the investigator, there arises a distinction more fundamental than those by which the various departments of objective sci- ence are marked oif from each other. And, in- deed, without some of the data furnished by this unique subjective science, it is impossible to obtain the premises of philosophy ; as will at once be admitted, on recollecting the topics which occupied us in the first part of this work. Psychology is therefore distinct alike from bio- logy and from other sciences, in its problems and in its theorems. The problem of biology is to formulate the laws of nutrition and repro- duction, muscular contraction and nervous irri- 117 COSMIC PHILOSOPHY tation, heredity and adaptation. The problem of psychology is to formulate the laws of Asso- ciation, — the order in which certain relations among environing phenomena give rise to cer- tain corresponding relations among our states of consciousness. And while the theorems of objective science in general are based upon the observation of objective phenomena, whether external or internal to the organism, the theo- rems of psychology are based not only upon the observation of objective phenomena, but also upon the observation of subjective states. In view of these results, we see how hope- lessly Comte went astray. Rejecting all intro- spection as metaphysical and delusive, he would have had us confine our inquiries to the suc- cession of those nervous phenomena which are the invariable concomitants of feelings, ignoring the fact that without introspective observation we can never even ascertain that there is any invariable concomitance between the feelings and the nervous phenomena. He would have us solve a problem in which two factors are con- cerned, by investigating only one factor. In giving his reasons for thus rejecting all observation of consciousness, Comte reveals his inability (upon which I have already frequently remarked) to distinguish between psychology and metaphysics. He insists that psycholo- gic inquiry, as hitherto conducted, has not re- ii8 LIFE AND MIND suited in discovery. If this were true, it would not help his case. Metaphysical psychologists have failed in discovery, not because they have directly examined states of consciousness, but because they have constructed unverifiable hy- potheses about the nature of Mind in itself. Where they have abstained from ontological inquiries, and have contented themselves with scientific methods, psychologists have made discoveries. To say nothing of such recent in- quirers as Bain, Wundt, Fechner, and Taine, it may be fairly claimed that, among older spec- ulators, Hobbes, Locke, Leibnitz, Berkeley, Hume, Kant, and Hartley, have by psycho- logic analysis made real and permanent contri- butions to our knowledge of mental operations. And at the very date when Comte was preparing his great treatise for publication, there appeared a remarkable book which, by establishing some of the fundamental laws of Association, went far toward placing psychology upon a scientific basis. It is not to the crude and superficial Gall, as Comte would have us believe, that we must give the respect due to the founder of scientific psychology : that respect is due, in far greater degree, to James Mill, the illustri- ous author of the " Analysis of the Human Mind.** Nevertheless, while psychology is a science clearly distinct from biology, dealing with phe- 119 COSMIC PHILOSOPHY nomena which may be classed as super-organic, and using introspective observation as one of its main implements of inquiry, it is no more than any other an absolutely independent sci- ence. Since the phenomena of Mind are never manifested to us save in connection with the phenomena of Life, and since the same general formula expresses the fundamental character- istics of the two groups of phenomena, it fol- lows that no complete science of psychology can be constituted without the aid of biology. The conclusions reached by the analysis of sub- jective states must be shown to be in harmony with the conclusions reached by the synthesis of objective phenomena, before the scientific in- terpretation of Mind can be regarded as entirely satisfactory. The force of this statement be- comes at once apparent, when we recollect that introspective observation can inform us only concerning the mental processes which go on in adult civilized men. In order to understand the genesis of these mental processes, we need the assistance of objective psychology and of nervous physiology; we need to compare the mental processes observed in adult civilized men, with the mental processes observed or in- ferred in civilized children, in adult barbarians, and in the lower animals, down to those hum- ble organisms in which the phenomena of in- telligence first become differentiated from the 1 20 LIFE AND MIND ihenomena of organic life. The immense ad- ''ance which has been made in mental science [uring the past forty years has been mainly due to the practical recognition of this fact. Trea- tises on psychology are no longer solely based pon an analysis of what happens when " I see fthe inkstand/' although analyses of this' sort are still, as is here maintained, indispensable. The nervous system, in its ascending complica- tions from the amphioxus to man, is now taken into the account. The normal variations in psychical manifestation, in the various human ices, from childhood to old age, are taken into 'the account. The abnormal variations caused by stimulants and narcotics, as well as those ex- libited in epilepsy, insanity, and other forms !of nervous disease, are taken into the account. And careful investigations into the ways - in which different organisms respond to external rstimuli, show us that the lower forms of psy- chical activity are no longer neglected. While [the analysis of complex mental operations has ■been pushed to an extent which until lately [would have been deemed impracticable, on the iother hand the sub-science of psychogeny, deal- ing with the origin of the various manifestations ►f mental activity, has arisen to coordinate im- portance with subjective psychology. It has [become generally recognized that — inefface- able as is the distinction between the pheno- 121 COSMIC PHILOSOPHY mena of consciousness and all other phenomena — nevertheless the one as well as the other can be scientifically explained only when present manifestations are studied in their connection with past manifestations. In this domain, as in all others, the Law of Evolution holds sway. Let us now, in accordance with these gen- eral considerations, begin by contemplating the phenomena of Mind as gradually differentiated from the phenomena of Life ; reserving for an- other chapter the interpretation of sundry psy- chological truths in terms of the law of evolu- tion. And first let us reconsider the definition of life which was briefly illustrated in the preced- ing chapter. We saw that life essentially consists in the continuous adjustment of relations within the organism to relations in the environment. And we saw that the degree of life is low or high, according as the correspondence between in- ternal and external relations is limited or exten- sive, partial or complete, simple or complex. We saw that the lowest forms of life respond to the changes going on about them only in a sim- ple, imperfect, and general way. A tree, for in- stance, meeting by changes within itself none but physical and chemical changes which occur with general uniformity in the environment, exhibits life in a very simple and unobtrusive form. We habitually regard it as less alive than a polyp, because the polyp, by displaying nascent sensi- 122 LIFE AND MIND tiveness and contractility, responds to a greater variety of more special external stimuli. Yet the polyp, possessing no specialized organs of sense, can oppose but one sort of action to many diverse kinds of impression. Phenomena so different as those of light and heat, sound and mechanical impact, can affect it in but one or two ways, — by causing it to move, or by slightly altering its chemical condition. The modes of response to outer relations are few and homogeneous. Passing abruptly to civi- lized man, at the other end of the animal scale, we find a different state of things. To each kind of external stimulus there are many pos- sible modes of response. Not only, for exam- ple, does the human organism sharply distin- guish between variations which affect the eye and those which affect the ear ; not, only do eye and ear, which are themselves organs of amaz- ing complexity, discern an endless number of differing tones and hues, as well as a great variety of intensities and qualities; but each particular manifestation of sound or of light is capable of arousing in the organism very differ- ent psychical combinations, entailing different muscular actions, according to circumstances. Tennyson's traveller, who, walking at nightfall in a strange land, hears the moaning of a dis- tant sea, — 123 COSMIC PHILOSOPHY •' And knows not if it be thunder, or a sound Of rocks thrown down, or one deep cry Of great wild beasts," — will adopt a course of action more or less in conformity with environing relations, according to the degree of his sagacity and the extent of his experience. Streaks of light and strata of cloud in the horizon will lead the practised mariner and the unskilled passenger to dif- ferent conclusions. A cartoon of Raphael or; a symphony of Beethoven will excite different emotions in an artist and in a person of feeble impressibility. And from the swinging of a cathedral lamp the young Galileo drew infer- ences which had escaped the attention or baffled- the penetration of thousands of less acute be- holders. Thus, with civilized man, the modes of response to outer relations are almost infi-^ nitely numerous and heterogeneous. But now, in this briefly indicated contrast! between the lowest and highest extremes of life, regarded as a correspondence between the or- ganism and the environment, we have passed abruptly from vital relations which are purelyj physical to vital relations which are almost purely psychical. The relations contemplated have been, in each of the instances, relations internally set up in adjustment to external rela- tions. But while the relations set up within the^ tree are simply physico-chemical ; and while thci 124 LIFE AND MIND relations set up within the polyp, though in- volving nascent sensitiveness, are nevertheless, in the absence of specialized nerve matter, un- attended by consciousness, and therefore cannot strictly be classed as psychical ; on the other hand, the relations set up within civilized man are almost purely psychical, involving only such physico-chemical elements as are necessitated by the fact that conscious activity does not go on unattended by molecular changes in nerve tissue. It appears, therefore, that while in the vegetal world, and in the lower regions of the animal world, the life is purely or almost purely physico-chemical, it becomes more and more predominantly psychical as we ascend in the animal world, until at the summit it is mainly psychical. The continuous adjustment of inner to outer relations, which both constitutes life and maintains it from moment to moment, is a process which, at first purely physiological, be- comes ever more distinctly psychological. From the facts of comparative anatomy we may elicit a parallel truth. In standard works on human anatomy it is customary to distin- guish between the vegetative organs (compris- ing the nutritive and reproductive systems), which are developed from the endoderm of the embryo, and the animal organs (comprising the nervo-muscular system), which are developed from the ectoderm. Not unfrequently these are 125 COSMIC PHILOSOPHY otherwise and .more appropriately distinguished as the nutritive and relational systems — the special office of the former being the integration of nutritive material, in behoof either of the or- ganism or of its derivative offspring, while the special office of the latter is the maintenance of relations between the organism and the environ- ment. The demarcation is thoroughly distinct, but it is not absolute ; since the relations each moment set up even in the nutritive system must correspond with certain general relations of air, temperature, and assimilable material in the environment. Now we have to note that in the vegetal world such general correspond- ences are all that are established ; there is no system of organs differentiated for the purpose of maintaining an equilibrium of relations with the environment. In such simply organized animals as the polyp there is no differentiation of relational tissues or organs ; but the entire surface of the animal, besides maintaining such general correspondences as characterize vegetal life, exhibits in a slight degree the irritability and contractility which in higher creatures are specialized in those tissues which form the rela- tional organs. In the molluscoida, the property of irritability being localized in a few nerve threads uniting in ganglionic masses, and the property of contractilitv being specialized in a parallel manner, there is rendered possible that 126 LIFE AND MIND more special mode of response to environing agencies known as reflex action. In the lower vertebrata the integration of numerous adjacent ganglia into a medulla, having connections with various parts of the organism, renders possible a much more perfectly coordinated series of re- sponses to external stimuli. And at the same time the development of a pair of pedunculated ganglia from the upper portion of the medulla is attended by the ability to compound the im- pressions which the medulla receives ; so that it becomes possible for the correspondences to extend in space and time. As we ascend through the vertebrate sub-kingdom, the growth of these pedunculated ganglia — the cerebrum and cere- bellum — becomes more and more the predomi- nant characteristic of the nervous system ; and at the same time the power of adjusting inner relations to remote, special, and complex rela- tions increases. Finally when we come to man, in whom the correspondences have reached a marvellous degree of heterogeneity, extent, and definiteness, we find not only that the relational system of organs is the dominant fact in his or- ganization, but also that the system of pedun- culated cephalic ganglia is the dominant fact in the relational system of organs. Not only is the nutritive life quite subordinated to the spe- cially relational life, but the lower modes of the relational life, such as reflex action and instinct, 127 COSMIC PHILOSOPHY are quite subordinated to those higher modes, such as thought and emotion, which are made possible by the great extent to which the cer- ebrum and cerebellum carry the compound- ing of impressions received in the medulla. In order to realize with vividness how completely human life has come to mean the higher psy- chical life, let us try to imagine what life would be without the cerebrum and cerebellum. Yet from the biological point of view these systems of ganglia, though nearly, are not quite, abso- lutely essential to human life — since the less complex acts and impressions are still coordi- nated after they have been destroyed by disease, and since infants, born without any brain save the medulla and basal ganglia, have been known to live for a short time. Such a deprivation of the higher relational activities naturally seems to us almost equivalent to deprivation of life. We may now more thoroughly appreciate the force of the distinction between the pro- vinces of biology and of psychology, which was stated in the earlier part of this chapter. We see that while life, physical and psychical, is the continuous adjustment of inner to outer rela- tions, nevertheless in the lowest forms of life, unaccompanied by mind, the outer relations to which adjustment is made are exceedingly gen- eral, and the correspondence is simple, direct, and homogeneous. But as we pass to forms 128 LIFE AND MIND somewhat higher, we find, along with this sim- ple correspondence maintained by the whole organism, a number of more complex, indirect, and special correspondences, for the establish- ment and maintenance of which there is differ- entiated a particular relational structure. As the correspondence increases in complexity, in in- directness, and in speciality, the maintenance of it is confined more and more to this spe- cialized nervo - muscular structure — and the enormously heterogeneous series of adjustments which eventually goes on becomes distinguished from the relatively homogeneous series of ad- justments which has all along been going on, as psychical life in contrast with physical life. Thus by a regular process of evolution it hap- pens that, while at the outset the psychical life is but a slight extension of the correspondence which constitutes the physical life, at the end the correspondence which constitutes the psy- chical life is all in all, and the processes of physical life come to be regarded as entirely subordinate to the maintenance of this higher correspondence. Let us now briefly trace the various exten- sions and complications of the correspondence as it becomes more heterogeneous, definite, and coherent. Scanty justice can here be done to the subject, since it is necessary for me to com- press into half a dozen pages the substance of VOL. m 129 COSMIC PHILOSOPHY a series of illustrations which in Mr. Spencer's exceedingly condensed exposition fill a hundred pages.^ Nevertheless a few striking facts may be noted down, which will serve to assist in the comprehension of the process. Let us first note that in the simplest forms of life the correspond- ence extends " only to external relations which have one or both terms in contact with the or- ganism. The processes going on in the yeast- plant cease unless its cell-wall is bathed by the saccharine and other matters on whose affini- ties they depend. . . . And so too among the lowest animals, the substances to be assimilated must come in collision with the organism be- fore any correspondence between inner and outer changes is shown." The correspondence is similarly limited in time. The tree, which puts forth its leaves from year to year, does so only in response to luminous and thermal changes which occur contemporaneously. The polyp's tentacles contract only in response to immediately present stimuli. "Alike in all these forms of life, there is an absence of that cor- respondence between internal relations and dis- tant external relations " — in space and time — which we see exhibited in higher forms. Now the extension of the correspondence in space is effected by the gradual differentiation ^ [See Part III. of vol. i. of the Psychology : " General Synthesis."] 130 LIFE AND MIND of organs of sense. One of the most notable achievements of modern biology is the discov- ery — due among others, to Huschke, Remak, Milne - Edwards, and Huxley — that all the sense-organs are but successive modifications of tactile structures, or rather, of those simple der- mal structures which in the higher organisms are specialized as tactile. The most perfect or- gans of touch are the vibriss^e or whiskers of the cat, which act as long levers in communicating impulses to the nerve fibres that terminate in clusters about the dermal sacs in which they are inserted. Yet these whiskers are merely spe- cialized forms of just such hairs as those which cover the bodies of most mammals, and which are found evanescent upon the human skin, em- bedded in minute sacs or reentrant folds. Now it is a demonstrated fact that the eye and ear are morphologically identical with vibrissa. The bulb of the eye and the auditory chamber are nothing but extremely metamorphosed hair- sacs, and the same is true of the olfactory cham- ber. The crystalline lens is a differentiated hair, the aqueous and vitreous humours are liquefied dermal tissue, and the otolites of the ear are " concretions from the contents of an epider- mic sac." In view of these astounding disclo- sures of embryology, we may readily assent to Mr. Spencer's statement that modern science justifies the guess of Demokritos, " that all the 131 COSMIC PHILOSOPHY senses are modifications of touch/' From a sin- gle sense, more or less diffused over the surface of the body, and capable of establishing corre- spondences only with agencies in direct contact with the body, there have arisen, by slow differ- entiations, such localized senses as sight and hearing, which serve to enlarge the environment and establish correspondences with agencies more and more remote. Let us briefly consider the sense of sight, omitting hearing, as well as smell and taste, since our space is too limited to deal with them properly. In such lowly organized creatures as the hy- dra the ability to distinguish between light and darkness, or between sunshine and shadow, is possessed in a slight degree by the entire sur- face of the body. But vision can hardly be said to exist, even in its most rudimentary aspect, until this sensibility is " concentrated in a par- ticular spot. The rudimentary eye consisting, as in a planaria, of some pigment grains, may be considered as simply a part of the surface more irritable by light than the rest. Some idea of the impression it is fitted to receive may be formed by turning our closed eyes towards the light, and passing the hand backwards and for- wards before them." But while this localization of sensibility enables the creature to adapt it- self to the movements of neighbouring opaque bodies, the extension of the correspondence is 132 LIFE AND MIND nevertheless very slight. To produce notice- able obscuration the opaque object must ap- proach very near ; and hence " we may infer that nascent vision extends to those objects alone which are just about to touch the organism, . . . so that it amounts at first to Httle more than anticipatory touch." ^ As we pass to higher forms, we find the eye gradually increasing in translucence, acquiring a convexity of surface, liquefying internally into refracting humours, while the nerve vesicles within multiply and arrange themselves as retinal rods ; the result being seen in the gradually increasing power of the organism to adapt its actions to actions occurring at a distance. The process and the result of development are essentially the same in the case of hearing and smell, though there are great differences in the degrees to which these senses are developed in the highest ani- mals. Further extension of the correspondence is effected, in the higher vertebrates, by the in- crease in size and complexity of the cerebrum and cerebellum. These pedunculated groups of ganglia, which issue from the medulla, and whose function it is to compound in higher and higher aggregates the already compound impressions received by the medulla, are capa- ^ Spencer, Principles of Psychology y vol. i. pp. 314, 315. [Part III. chapter iv. § 142.] COSMIC PHILOSOPHY ble of adjusting inner relations to outer rela- tions beyond the reach of the organs of sense. " Chased animals that make their way across the country to places of refuge out of view are obviously led by combinations of past and pre- sent impressions which enable them to tran- scend the sphere of the senses." And in man, by the aid of science, the correspondence is ex- tended not only over the entire surface of the earth, but through all visible space ; witness the facts that telegraphic reports enable purchasers in New York to adapt their actions to prices in London, and that the inferences of astrono- mers are modified in accordance with chemical changes going on in remote nebulae. Along with the extension of the correspond- ence in space there goes on an extension in time, resulting in an enormous increase of the psychical life. Under their more simple forms the two kinds of extension go on together. The rudimentary eye, which enables the organism to anticipate the contact of an approaching opaque body, may serve to illustrate the primitive con- nection between adjustments to external coex- istences and adjustments to external sequences. And it is obvious, without concrete illustration, that in general the more remote are the outer relations to which inner relations are adjusted, the longer will be the interval by which the ad- justment may be made to anticipate the group 134 LIFE AND MIND of outer relations which it is designed to bal- ance. But it is only in the higher vertebrates, whose cephaHc ganglia are sufficiently large and complex to enable them to form ideal represen- tations of outer relations not immediately pre- sent, that there is witnessed a decided extension of the correspondence in time. Dogs and foxes exhibit a well-marked anticipation of future events, in hiding food to be eaten hereafter. But it is first in the human race that such foresight becomes highly conspicuous ; and the difference between civilized and savage men in this respect is probably even more marked than the differ- ence between savage men and the higher allied mammals. There are strong reasons for believ- ing that the more complex correspondences in time are chiefly effected by the cerebrum, while the more complex correspondences in space are chiefly affected by the cerebellum. And if this be the case, we may understand why it is that in the course of human progress the increase of the cerebrum in size and complexity has been so much greater than the increase of the cere- bellum. In no other respect is civilized man so widely distinguished from the savage, as in his habitual adjustment of his daily actions to contingencies likely to arise in a more or less distant future. But here we touch upon an important theorem of sociology, which I shall hereafter consider at greater length. 135 COSMIC PHILOSOPHY Next let us note that the extension of the cor- respondence in space and in time is accompanied by a progressive increase in the speciality of the correspondence. Manifestly the differentiation of sense-organs which renders possible the ad- justment of inner relations to distant outer re- lations, also renders possible the adjustment of inner relations to outer relations that are more and more special. Increased width of retina en- hances the power of estimating the size of neigh- bouring objects, since the differences in the vis- ual areas which they occupy will become more clearly appreciable. The multiplication of retinal rods enhances the power of estimating shape, since differently shaped objects affect different numbers and different combinations of these rods. Thus while animals with rudimentary vision, in becoming aware of the presence of approaching objects, can recognize them only as objects, on the other hand an animal with de- veloped vision, in recognizing objects near or distant, can also distinguish between innumer- able differences in their sizes and shapes, and can make a proportionally great number of spe- cial adaptations in its conduct. It is similar with the ability to distinguish colours, and to esti- mate direction by the eye. And from the grow- ing heterogeneity of the other senses, we might draw parallel illustrations, were there room for them. Finally the high development of the 136 LIFE AND MIND cephalic ganglia, rendering possible the com- pounding of ideal representations of objects and relations not present to sense, increases to an enormous degree the speciality of the adjust- ments. Such special adjustments are seen in the cases of " the lion that goes to the river-side at dusk to lie in wait for creatures coming to drink, and the house-dog standing outside the door in expectation that some one will presently open it." But the increase in speciality of adjustment is most conspicuously exemplified in the pro- gress of the human race ; as is seen by contrast- ing the savage who sharpens his arrows in ex- pectation of the periodic flight of certain birds, with the astronomer who at a given day, hour, and minute adjusts his telescope to watch a transit of Venus. In the Ufe of the highest animals, and espe- cially in the life of the human race, character- ized as it is by the predominant activity of the great cephalic ganglia, there is witnessed an in- crease in the generality of the correspondence, parallel with the increase in speciality. As this topic falls almost entirely within the province of sociology, the illustration of it must be reserved for a future chapter. Let it here suffice to re- call the fact, already mentioned (Part I. chapter viii.), that the progress of human knowledge has all along been equally characterized by analysis and by synthesis, — by the differentiation im- 137 COSMIC PHILOSOPHY plied in the recognition of relations that are more and more special, as well as by the inte- gration implied in the grouping of relations in classes that are more and more general. Along with the increase of the correspondence in spatial and temporal remoteness, in speciality and in generaHty, there is a continuous increase in complexity. Indeed, in the various aspects of psychical progress already contemplated, this aspect has been continually illustrated. Obvi- ously the development of sense-organs, while widening the environment and increasing the number of relations to which the organism may adjust itself, enhances also the complexity of the adjustments. Contrast the simple move- ments of the planaria when an opaque object passes before its rudimentary eye, with the com- plex movements of a cat when a mouse is heard scratching in the wainscot, and it becomes evi- dent that the heterogeneity of the impressions received by an organism is paralleled by the heterogeneity of the adjustments by which it responds to them. The multiplication of the objects and relations of which any organism can take cognizance involves of necessity a growing complexity in the actions by which it adapts it- self to their presence. In civilized man, whose immensely developed cephalic ganglia bear wit- ness to the predominance of psychical over phy- sical life, this correlated advance in heterogene- 138 LIFE AND MIND ity of correspondence is exemplified in the in- terdependent progress of science and art. Here again we are carried into the domain of socio- logy, and this thread must be left to be gathered up with the others when we come to treat of intellectual progress. It remains to note that the extension of the correspondence in space and time, and its in- crease in definite heterogeneity, both heighten the degree of life and add to the ability to maintain life. On the one hand, the more nu- merous, the more complicated, and the more clearly defined are the outer relations to which the organism adapts itself, and the longer the interval of time by which the adjustments may be made to forestall external contingencies, the greater will be the number of heterogeneous changes in which life consists. And on the other hand, the greater the number of heterogeneous changes by which the organism can respond to outer changes, the more easily and surely will life be prolonged. Whence, says Mr. Spencer, "we may clearly see how life and ability to maintain life are two sides of the same fact — how life is a combination of processes, the result of whose workings is their own continuance." An interesting commentary on this proposition is furnished by Mr. Lankester's recently pub- lished essay on " Comparative Longevity," in which it is shown that high individuation, or the COSMIC PHILOSOPHY power of responding heterogeneously to exter- nal changes, is the chief, though not the sole, factor concerned in producing length of life. The amount of normal longevity in any spe- cies depends upon the definite heterogeneity of the adaptation of its individual members to en- vironing circumstances, and also upon the ratio of their nutrition to their expenditure. But the preponderant importance of the former factor is seen in the fact that, in spite of their immensely greater personal expenditure, the higher animals are, as a rule, very much longer lived than the lower ones. In the civilized human races also, as contrasted with the savage races, the life is not only higher in degree but longer in dura- tion : the longevity of the lowest savages rarely exceeds forty-five years. As we proceed to survey, in a single view, the various truths here separately elucidated, we find that the essential distinction, above insisted on, between the sciences of biology and psychology, is thoroughly justified by the very facts which illustrate the close connection between the two. The foregoing exposition conclusively proves that in dealing with the adjustments of inner to outer actions, biology " limits itself to the few in which the outer actions are those of agents in actual contact with the organism — food, aer- ated medium, and things which produce certain effects by touch (as insects which fertilize flow- 140 LIFE AND MIND ers) ; thus leaving to psychology all other ad- justments of inner to outer actions.** " The moment we rose to a type of creature which adjusts certain organic relations to relations of which both terms are not presented to its sur- face, we passed into adjustments of the psycho- logical order. As soon as there exists a rudi- mentary eye capable of receiving an impression from a moving object about to strike the organ- ism, and on rendering it possible for the organ- ism to make some adapted movement, there is shown the dawn of actions which we distinguish as intelligent. As soon as the organism, feebly sensitive to ajar or vibration propagated through its medium, contracts itself so as to be in less danger from the adjacent source" of disturbance, we perceive a nascent form of the life classed as psychical. That is to say, whenever the corre- spondence exhibits some extension in space or in time, some increase of speciality or complex- ity, we find we have crossed the boundary be- tween physical life and psychical life." ^ ^ Spencer, Principles of Psychology, vol. i. p. 392. [Part III. chapter xi. § 175.] 141 CHAPTER XV THE COMPOSITION OF MIND^ IN pursuing the analysis of a complex series of phenomena, with the object of ascertain- ing the simple ultimate elements of which the complex series is made up, we shall some- times most satisfactorily accomplish our pur- pose if we begin with the most complicated cases which the series presents. After explaining these by resolving them into their less complex com- ponents, our analysis " must proceed similarly with these components ; and so, by successive decompositions, must descend to the simpler and more general, reaching at last the simplest and most general." Let us proceed, after this fashion, to inquire into the Composition of Mind. Beginning with the most highly in- volved operations of conscious intelligence, and neglecting, for the time being, the consideration of those emotional states by which all operations of intelligence are to a greater or less degree ac- companied, let us pursue our analysis until we have arrived at those ultimate units of feeling in the manifold compounding of which all con- ^ [See Introduction, § 20.] 142 THE COMPOSITION OF MIND scious operations, whether intellectual or emo- tional, consist. Beginning, then, with a somewhat compli- cated operation of intelligence, let us consider the process by which an astronomer, knowing the dimensions of the earth, is enabled to cal- culate therefrom the distance of the moon. He must, in the first place, assimilate in thought the case of the moon to like cases in which the dis- tances of inaccessible objects upon the earth are indirectly measured. When a land surveyor wishes to ascertain the distance of a church tower situated on the farther side of a river, he has recourse to an indirect method of measure- ment. Upon his own side of the river he first measures the distance between two points suffi- ciently removed from each other, and this dis- tance he calls a base line. From each end of the base line he now takes a sight at the inac- cessible tower, and, with the proper instruments, measures the difference between its direction and the direction of the base line. In this way he obtains an ideal triangle, of which the tower is the apex ; and, knowing the length of the base line, and the value of the two angles at the ends of the base line, he calculates by trigonometry the length of the two sides which express the distance of the tower from the ends of the base line. Now, the astronomer, imitating this pro- cess, assumes as a base line the known distance 143 COSMIC PHILOSOPHY between two remote points on the earth's sur- face, as for example London and Cape Town ; and then from each of these points he proceeds to take the bearings of the moon. The process, indeed, is here compKcated by the fact that, ow- ing to the long distance, the inequalities of the earth's surface, and its curvature, the observer at Cape Town cannot see the position of Lon- don, and vice versa. It is necessary, therefore, again to resort to an indirect method, and, having measured the meridional bearings of the moon from the north pole at London and from the south pole at Cape Town, to compare these bearings with the knowledge that the bearing of the one pole from the other is i8o degrees or two right angles. A further correction must be made for the fact that London and Cape Town are not on the same meridian. But disregarding these steps in the process, as unnecessarily com- plicating our case, we have to note that, when the astronomer has thus indirectly measured the angles which ideal lines drawn to the moon must make at the two ends of his long base line from London to Cape Town, he is at once enabled, like the land surveyor, to calcu- late by trigonometry the lengths of these ideal lines, and thus to ascertain the moon's distance. What, now, is the essential characteristic of the process which the astronomer goes through ? Or, in other words, what is the fundamental psy- 144 THE COMPOSITION OF MIND chical process by the manifold compounding of which is built up this highly complex series of inferences ? From beginning to end, the fundamental pro- cess is the cognition of the equality of sundry relations. The thought which underlies and de- termines the whole calculation is the cognition that the relations between the sides and angles of a great triangle, having for its apex the moon, and for its base the chord of the arc of the meridian of London measured to a point in the southern hemisphere upon the same parallel with Cape Town, are equal to the relations be- tween the sides and angles of a similar small tri- angle, having an inaccessible tower for its apex and a measured line of five or six rods for its base ; and that these relations, in turn, are equal to the relations between the sides and angles of a still smaller and similar triangle which may be drawn on a sheet of paper, and of which the sides and angles may, if necessary, be directly measured. Now, this cognition implies the pre- vious establishment, in the calculator's mind, of sundry cognitions of the equalities and inequal- ities of certain relations between the sides and angles of triangles. To show briefly how such cognitions have been established, let us cite the simplest case — that in which the two angles at the base of an isosceles triangle are recognized as equal to each other. Euclid establishes this VOL. Ill 145 COSMIC PHILOSOPHY point by supposing two similar and equal isos- celes triangles, of which the one is turned over and placed upon the other, so that the apex and one side of the one will coincide with the apex and opposite side of the other. Then the other sides and the bases must respectively coincide, otherwise the two triangles would not be similar and equal, and the conditions of the case would be violated. All the sides being thus equal, each to each, the two triangles must everywhere co- incide, and consequently the two basal angles must be equal, both in the triangle which has been turned over and in the one which has kept its original position. Now, each step of this de- monstration is a cognition of the equality of a pair of relations of length or of direction ; and in each case this cognition is established, not by any anterior demonstration, but by direct in- spection. Or, in other words, when it is said that two lines of equal length, starting from the same point, and running in the same direction, must coincide at their farther extremities, the truth of the statement is at once recognized simply because the states of consciousness which we call the ideas of the two lines are totally indis- tinguishable from each other. This immediate perception of the equality — or, in some cases, of the inequality — between two or more rela- tions of position or magnitude is the goal to- ward which every geometrical demonstration 146 THE COMPOSITION OF MIND tends. And, still more, it is the mental act im- plied in every step of every such demonstration. All the devices familiar to the reader of Euclid — the bisecting of lines and angles, the drawing of parallels and the circumscribing of circles for argumentative purposes — are simply devices for bringing a given pair of space relations di- rectly into consciousness, so that their equality or inequality may be recognized by direct in- spection. Manifestly the case is the same in that alge- braic reasoning which our astronomer will often find it desirable to employ in the course of his computation of the moon's distance. The axiom that " relations which are equal to the same relation are equal to each other " is an axiom which twice involves the immediate recognition of the equality of two given relations. And, if any proof were needed that the whole science of algebra is based upon this axiom, it may be found in one of the most common algebraic arti- fices. " When a simpHfication may be thereby achieved, it is usual to throw any two forms of an equation into a proportion — a procedure in which the equality of the relations is specifically asserted." To cite Mr. Spencer's simple illus- tration, — if we take any equation, 2 xy =y, and, dividing it byjy, obtain a second equation, 2 X =jy, the legitimacy of our proceeding is at once rendered apparent when the two equations are 147 COSMIC PHILOSOPHY thrown together in a proportion, in which it is asserted that the ratio of 2 xy to y^ is equal to the ratio oi ix to jy. Or, if any doubt still remain as to the correctness of this, we resort to the familiar device of multiplying extremes and means, and obtain the identical proposi- tion ixy'^-ixy'^^ in which the identity of the two terms is immediately cognized, because the states of consciousness which they evoke are in- distinguishable from one another. Thus the complicated quantitative reasoning by which an astronomer determines the distance of a heavenly body consists in the long-contin- ued compounding of immediate cognitions of the equality or inequality of two or more given relations or groups of relations of position and magnitude. Before proceeding to unfold all that is im- plied by this conclusion, let us consider another concrete example of a somewhat different kind. When a certain horned animal, of slender fig- ure, with cloven hoofs, and a hairy integument, is presented to the inspection of a naturalist, he at once recognizes it as a giraffe ; and, if required further to describe it, he observes that, as having four stomachs and chewing the cud, it belongs to the sub-order of ruminants ; as having its toes firmly united in a solid hoof, it belongs to the order of ungulata; as having mammary glands and suckling its young, it be- 148 THE COMPOSITION OF MIND longs to the class of mammals ; and, as having an internal bony skeleton, it belongs to the sub-kingdom of vertebrates. What, now, is the mental act which is repeated at each stage of this description? It is " a cognition of the fact that the relation between particular attributes in this animal is like the relation between homologous attributes in certain other animals." To confine ourselves to the first clause of the description — " the attributes implied by the term ruminant can be known only as previously observed or described ; and the predication of these, as pos- sessed by the animal under remark, is the predi- cation of attributes like certain before -known attributes. Once more, there is no assignable reason why, in this particular case, a relation of coexistence should be thought, between ' such attributes as the possession of four stomachs and the possession of horns and cloven hoofs,' un- less as being like certain relations of coexistence previously known ; and, whether the think- ing of this relation can be otherwise accounted for or not, it is clear that the predication can- not otherwise have any probability, much less certainty." ^ The case is the same with the remaining clauses of the description. In each instance the mental operation performed by the naturalist is the recognition of the likeness be- ^ Spencer, Principles of Psychology, vol. ii. p. 69. [Part VI. chapter vii. § 298.] 149 COSMIC PHILOSOPHY tween certain groups of relations observed in this giraffe and certain other groups of relations previously classified as pertaining to ruminants, ungulata, mammals, and vertebrates. Obviously, therefore, the reasoning by which the places of animals in the zoological scale are determined consists in the compounding of cognitions of likeness or unHkeness between certain given groups of relations. So far, then, the mental operation performed by the naturalist seems to be not unlike that performed by the astronomer. And indeed, in spite of the superficial difference which seems so widely to separate the classification of ani- mals from the measurement of celestial spaces, it will appear, on a moment's reflection, that the only real difference between the mental pro- cesses involved in the former case, and those involved in the latter, is the extent to which likeness is predicated of the relations concerned. Deeply considered, the act of the astronomer is the same as that of the naturalist, — save that, while the former classifies together sundry groups of relations as equal to one another, or indistinguishable from one another, the latter classifies together sundry groups of relations as like one another, or but slightly distinguish- able from one another. Now, in this state- ment we see that what is meant by equality is merely exact likeness; but something more is 150 THE COMPOSITION OF MIND needed for the accurate description of the dif- ference between the two cases. The objects which the astronomer contemplates are simple triangles, presenting simple relations of posi- tion and magnitude ; while the objects contem- plated by the naturalist are complex organisms, presenting immensely compounded relations of structure and function. Now, in speaking of simple things or simple relations, such as lengths and breadths, weights, times, and velocities, we habitually predicate equality or inequality of them. " Wherever the terms of the compari- son, being both elementary, have only one as- pect under which they can be regarded, and can be specifically posited as either distinguishable or indistinguishable, we call them either unequal or equal. But when we pass to complex things, exhibiting at once the attributes, size, form, col- our, weight, texture, hardness, -— things which, if equal in some particulars, are rarely equal in all, and therefore rarelyindistinguishable, — then we use the term like to express, partly the ap- proximate equality of the several attributes sep- arately considered, and partly the grouping of them in a parallel manner in time and space. Similarly with the relations involved in reason- ing. If simple, they are recognized as equal ox unequal; if complex, as like or unlike^ The essential difference, then, between the quantitative reasoning employed in the most COSMIC PHILOSOPHY advanced sciences, and the qualitative reasoning employed in those which are less advanced, may be thus stated : in the first case the rela- tions contemplated are so simple that they may be directly juxtaposed in consciousness, and re- cognized as equal or unequal ; but in the sec- ond case the relations contemplated consist of so many simple relations heterogeneously com- bined, that they can only through a very indi- rect process be juxtaposed in consciousness, and hence are only approximately recognized as like or unlike. That this is the only essential difference between quantitative reasoning and qualitive reasoning is shown by the fact that all qualitative reasoning is vaguely quantitative, while all quantitative reasoning begins by being qualitative. For example — to cite Mr. Spen- cer's admirable illustration — when a brewer de- scribes a vat of fermenting wort as containing carbonic acid, he makes a qualitative statement; yet some rude notion of quantity is involved in it. " He thinks of the carbonic acid as more, certainly, than a cubic foot ; less, certainly, than the total capacity of the vat : the quantity is thought of as in some ratio to the quantity of wort." On the other hand, " a man who has walked a mile in fifteen minutes, and, observ- ing that he has a quarter of a mile still to go, infers the time it will take to reach his destina- tion, does not primarily infer three minutes and 152 THE COMPOSITION OF MIND three quarters ; he primarily infers a short time — a time indefinitely conceived as certainly less than ten minutes, and certainly more than one." Doubtless he may in an instant proceed to cal- culate the exact length of the time ; yet, as it will not be denied that even before calculating he has a vague notion of the interval, it must be admitted that his inference, though ultimately quantitative, is, at the outset, only qualitative. Between the two kinds of reasoning, therefore, the only difference is the degree of definiteness to which they are respectively developed. Bearing in mind these mutually harmonious conclusions — which alike imply the assertion that, between the highest and the lowest kinds of reasoning employed by civilized man, the difference consists solely in the complexity of the relations contemplated, and in the greater or less definiteness with which these relations are cognized as equal or unequal, like or unlike — let us now advance a step farther. Already, in the course of the foregoing analysis, the essen- tial similarity between reasoning and classifica- tion has been vividly brought before us. We have now to scrutinize this similarity somewhat more closely. To cite an example with which we are already familiar : when our astronomer, some thirty years ago, observed that certain irregularities in the motions of Uranus still remained un- COSMIC PHILOSOPHY accounted for, after calculating the combined effects of all the interior planets in producing such irregularities, it occurred to him that the unexplained irregularities could only be due to the gravitative force of some undiscovered planet outside of Uranus ; and the discovery of Neptune was the result of this most brilliant hypothesis. Now, the mental act involved in this deduction was essentially a classification of cases. The case of the unexplained perturba- tions was mentally ranked along with the sev- eral cases of explained perturbations presented by the solar system, as being similarly due to gravitative force ; and to the number of known cases in which planets deflect each other from the regular paths in which they would other- wise move, a new hypothetical case was added. Comparing, now, this mental operation with that of the naturalist who, by virtue of certain observed likenesses of structure and function, ranks together lions and elephants and seals in the class of mammals, we may conclude roughly that the one process consists in the for- mation of a group o^ like cases, while the other consists in the formation of a group of like things. And since by the expression " like cases " we mean merely " like sets of relations among two or moxe given groups of things," it follows that we may characterize Reasoning as the classification of relations, while Classification, THE COMPOSITION OF MIND ordinarily so called, is the classification of things. When, for example, on perceiving two similar triangles set side by side, we proceed to make some inference from the known value of a side in the one to the desired value of the correspond- ing side in the other, the act is an act of reason- ing. But when, on taking up two similar sea- shells, we recognize them in their totality as belonging to an oyster or some other familiar mollusk, the act is an act of classification, com- monly so called. In other words, if the per- ception of similarity is followed by the thought of one or more of the like relations which make up similarity, we have an act of reasoning ; but if it is followed by the thought of other objects presenting like relations of similarity to the one now perceived, we have an act of classification. But closely related as these two mental op- erations are now seen to be, we have not yet disclosed the full extent to which they are re- lated. Not only is classification involved in every act of reasoning or inference, but reason- ing or inference is involved in every act of classification. Not only does reasoning consist in the grouping of relations as like or unlike, but the classification of things can go on only through the grouping of relations as like or un- like. To illustrate this, let us take a further downward step, and consider a mental operation apparently much simpler than those hitherto COSMIC PHILOSOPHY treated. Let us consider what is implied by the perception of an object. It is admitted on all sides that the perception of an object necessarily implies the recognition of the object as this or that, as like certain ob- jects, and as unlike certain other objects. Every act of perception, therefore, involves classifica- tion. We cannot even name a chair without implying the existence of a group of objects which the chair resembles ; and the essential element in the perception of a chair is not the reception of a group of visual or tactual im- pressions, but the interpretation of these im- pressions as like other antecedent impressions which, taken together, constitute the conscious- ness of the presence of a chair. And this is as much an act of classification as the act by virtue of which the naturalist would rank a newly found horned and cloven-hoofed mammal among the ruminants ; the only difference being that in ordinary perception the act has been per- formed so frequently as to have become auto- matic at an early period of life, while in scienti- fic classification the act involves more or less conscious thinking, and comparison of rela- tions. Here, in this last clause, there is hinted what we are seeking for. Not only in scientific clas- sification, but in ordinary perception also, there must go on a comparison of relations, and a 156 THE COMPOSITION OF MIND grouping of them as like or unlike. In per- ceiving an apple, for example, " the bulk is per- ceived to be like the bulk of apples in general ; the form like their forms ; the colour like their colours ; the surface like their surfaces ; and so on." For if the bulk were like that of a water- melon, or if the shape were cubical, or if the colour were inky black, or if the surface were covered with thorns, the object would not be perceived to be an apple. The act of percep- tion, therefore, consists in the recognition of sundry attributes as like sundry attributes pre- viously known, and as having relations to one another like the relations between the before- known attributes. This will appear still more clearly when we recollect what takes place in visual perception. It is well known that the eye, unassisted by the muscular and tactual senses, can take no cognizance of distance, shape, or solidity — the only impressions which the retina receives are impressions of colour, and indirectly of superficial extension. It is because of this that infants reach out for the moon, and that blind men, on first receiving sight, are unable to distinguish between a round orange and a cubical block, without feeling the surfaces of the two. Only after repeated and careful com- parison of visual impressions with muscular and tactual impressions is the patient enabled to discover, by the eye alone, that all the objects COSMIC PHILOSOPHY in the room or in the landscape are not in con- tact with his body ; and it is only after a sim- ilar elaborate comparison that the young child achieves the feat of looking at an object in a given direction, or of recognizing by vision its father or mother. Accordingly, when looking about the room, all that you really see is a con- geries of coloured spots. Your knowledge of the presence of divers objects — chairs, win- dows, mirror, mantelpiece — is not given in the act of vision, but is the result of an exceed- ingly complex, though apparently instantaneous, process of reasoning. Your seemingly immedi- ate knowledge that a certain group of coloured spots means a chair is due to the fact that from early infancy this group of coloured spots, or some other like group, has been associated with sundry impressions of touch and resistance, and with sensations yielded by the little muscles which turn the eye hither and thither. The frequency with which the association has been repeated has rendered the process of inference automatic, just as, to a less-marked extent, the process of reading, at first accompanied by a conscious classification of every letter, has be- come automatic, so that we are not aware of cognizing the letters at all. Nevertheless, al- though too rapid to rise into consciousness, the process is still one of inference, implying, like any other process of inference, the grouping of 158 ,m^^_ THE COMPOSITION OF MIND certain relations as like or unlike certain other relations. Certain correlated groups of colours are automatically classified with other correlated groups of colours previously received upon the retina, and also with certain correlated groups of muscular and tactual impressions, previously received simultaneously with the groups of col- ours in question. Thus our visual perception of objects consists of a group of sensations ^///i a complicated series of inferences which does not differ fundamentally from a course of scien- tific demonstration. And the same truth may be, with equal justice, though less vividly, illus- trated in the case of any other sense than sight. A much simpler case than that of visual per- ception is that of a spoon, containing some un- known liquid, thrust into the mouth by another person in the dark. Here the only clew to the character of the liquid is its taste ; and when, by its peculiar mild pungency, the Hquid is re- cognized as bromide of potassium, the psychical process consists of a gustatory sensation plus an act of classification by which the sensation is grouped, with other like sensations previously received. The example is a good one, as show- ing us also the obverse case. If bromide of potassium has not been previously tasted, the result is simply gustatory sensation unattended by perception ; or rather, it is gustatory sen- sation generically classified as mildly pungent, 159 COSMIC PHILOSOPHY but not specifically referred to any known liquid, and therefore only partially interpreted. There is perception, but it is incomplete. It is not pretended that these psychological truths are established by the crude and frag- mentary exposition here given. The numerous observations and experiments upon which they are based would be very interesting to recount ; but our space does not admit of detailed proof, nor is it needed ; since these truths are the common property of psychologists, and will be questioned by no competent student of the phenomena of mind. Referring, for minute and elaborate proof, to Mr. Spencer's " Principles of Psychology," let us be content with setting down the implication which is common to all these conclusions ; namely, that between the various psychical processes thus far contem- plated, which include alike the measurement of celestial distances by the astronomer, and the direct perception of objects by the unlearned child, or indeed by the ape or dog, there is generic identity. The fundamental characteristic which is common to them all is the reception of certain groups of sensations, accompanied by the classification of these groups of sensations, and of the relations between them, according to their various likenesses and unlikenesses. The difference between the highest and the lowest of the processes thus brought together con- i6o THE COMPOSITION OF MIND sists solely in the heterogeneity and definite- ness of the groups which are classified, and in the extent to which the classifications are com- pounded. To such a statement, however, there is one essential qualification to be added. It is not strictly correct to say that the classification in- volved alike in the most complex act of reason- ing and in the simplest act of perception is a classification of groups of sensations and of the relations between them. For when an object is perceived, along with the sensations actually present, there are remembered or internally revived sensations which enter into the classi- fication, and these internally revived sensations are what we call ideas or images. For example, " when passing the finger over a rough surface, the perception contains very much more than the coordinated sensations immediately experi- enced. Along with these there go the remem- bered visual impressions produced by such a surface, which cannot be kept out of the mind, and in the suggestion of which the perception largely consists ; and there are automatic in- ferences respecting the texture and density of the substance." So when we see an orange lying on the table, the only sensation actually present and entering into the case is the sen- sation of a patch of reddish-yellow colour sur- rounded by other unlike patches of colour. vnr TTi 1 O I COSMIC PHILOSOPHY The other elements in the classification of which the perception consists are ideas or internally revived sensations of position, shape, bulk, texture, juiciness, and so on. And now we dis- cover another point of difference in degree be- tween perception and reasoning. While in per- ception some of the elements classified must be sensations actually present, in reasoning all the elements classified may be ideas or internally revived sensations. The sides and angles of the isosceles triangles which the astronomer compares in estimating the moon's distance are ideal sides and angles ; and the naturalist, in writing about the classification of ruminants, deals solely with internally revived impressions of horns, hoofs, and multiple stomachs, which were previously present to sense. Thus the classification involved in reasoning differs from that involved in perception, not only in heter- ogeneity and definiteness, but also in indirect- ness. Nevertheless the difference is not funda- mental, but is only a difference in degree ; as is proved by the fact that alike in reasoning and in perception there is implied the previous re- ception of the actually present sensations of which the ideas or revived sensations are the copies. Our statement, therefore, will become strictly correct if we say that the fundamental characteristic common to the most refined rea- soning, and the crudest perception, is the pre- 162 m THE COMPOSITION OF MIND sence of certain states of consciousness^ accom- panied by the classification of these states and of the relations between them according to their various likenesses and unlikenesses ; the differences between the processes being differ- ences in heterogeneity, definiteness, indirectness, and extent of integration or compounding. Let us next observe that, as between the highest and lowest kinds of reasoning there is a great difference in the extent to which the com- parison of relations is carried, so between the highest and lowest kinds of perception there is a similar difference. There is a striking contrast in degree of di- rectness " between the perception that some surface touched by the finger is hard, and the perception that a building at which we are look- ing is a cathedral. The one piece of knowledge is almost immediate. The other is mediate in a double, a triple, a quadruple, and even in a still higher degree. It is mediate inasmuch as the solidity of that which causes the visual im- pression is inferential ; mediate inasmuch as its position, its size, its shape, are inferential ; me- diate inasmuch as its material, its hollowness, are inferential ; mediate inasmuch as its ecclesi- astical purpose is an inference from these infer- ences ; and mediate inasmuch as the identifica- tion of it as a particular cathedral is a still more remote inference resulting from the union of 163 COSMIC PHILOSOPHY these inferences with those many others through which the locaHty is recognized."^ From this example it appears that while, at the highest extreme, perception emerges into reasoning, on the other hand at its lowest extreme, as where a body is perceived to be rough or hard, it borders very closely upon simple sensation. Proceeding then a step farther in our descend- ing analysis, we have to examine the character of the difference between perception and sen- sation. Sensation, no less than perception, has a variety of grades. At the one extreme it rises to a point where it is barely distinguishable from perception ; at the other extreme it lapses into an unconscious or sub-conscious psychical state. While writing these lines the sum total of my consciousness may contain elements con- tributed by dull sounds of persons walking overhead, by the rumbling of wagons in the street, by faint odours wafted from the kitchen, by soothing pulses of sensation from the pipe held in my mouth, and by the occasional strik- ing of the cuckoo-clock, as well as by the pres- sure exerted by the chair in which I am sitting, and the table upon which my arm is resting, and the pen which is grasped in my fingers. But while I am absorbed in thought, none of these ^ Spencer, Principles of Psychology, vol. ii. p. 245. [Part yi. chapter xviii. § 352.] 164 I THE COMPOSITION OF MIND elements rise into the foreground of conscious- ness, — though they are present as psychical states, as is shown by the fact that the going out of the pipe or the failure of the clock to strike is noticed; yet I hQCome conscious of them, in the ordinary sense of the word, " only when they pass a certain degree of intensity," as when a child overhead falls on the floor, or when the shriek and rumble of a passing railway train are added to the confused mass of outdoor noises ; "and only then can I be said to experience" these feelings " as sensations." But when a psychical state rises into the foreground of con- sciousness and becomes known as a sensation, as when my finger happens to touch the heated pipe -bowl, then "I not only contemplate the afl^ection as an afi^ection of myself — as a state through which my consciousness is passing or has passed — but I also contemplate it as ex- isting in a certain part of my body — as stand- ing in certain relations of position. I perceive where it is." The close relationship between sensation and perception is illustrated by this example : nevertheless psychology here distin- guishes between two portions of the mental act. Though in the practical experience there is no separation between the two, yet analysis enables us to distinguish between the consciousness of the painful feeling and the consciousness of the presence of the heated object which causes 165 COSMIC PHILOSOPHY the feeling ; and the former of these we call sensation, while the latter we call perception. We shall now be greatly assisted by observ- ing a psychological fact of which Sir William Hamilton caught a glimpse, though, as usual, his analysis was not sufficiently thorough, and his statement of the case was inaccurate. We need not pause to criticise the theorem that while " perception proper and sensation proper exist only as they coexist, in the degree or in- tensity of their existence they are always found in an inverse ratio to each other;" for its in- accuracy has been fully demonstrated by Mr. Mill and also by Mr. Spencer, who shows the true statement to be, "not that sensation and perception vary inversely, but that they exclude each other with degrees of stringency which vary inversely." To illustrate this, we will sup- pose that you are getting water from a hot- water faucet, and that, as the water begins by running cold, you clasp your hand about the faucet so as to turn it off when the water has become sufficiently warm. While the water is cool or tepid, sensation is at the minimum, and not only is there no exclusion of perception, but consciousness is occupied with the outer phenomena, the faucet and the running water, more than with the inner phenomenon, the feeling of temperature. The pointed end of the upright part of the faucet, and the protuberance i66 THE COMPOSITION OF MIND where the horizontal piece is fitted upon it, awaken tactual sensations which coexist with the sensation of temperature, and the automatic comparison of these sensations which consti- tutes the perception of the faucet goes on un- hindered. To concentrate consciousness upon the feeling of temperature requires a voluntary- act of attention, induced by the desire to know how wirm the water is getting. As the water becomes very much warmer, so as to be slightly uncomfortable, the perception of the faucet does not become gradually less vivid, but it tends to disappear entirely, and consciousness tends to occupy itself exclusively with the feeling of temperature. Only through a distinct volun- tary effort can the perception be made to come into the foreground of consciousness. If now there comes a sudden spurt of very hot water, the tactual perception of the faucet is for the moment entirely excluded, and the perceptive act implied in the estimation of the degree of temperature is also expelled from consciousness, which is occupied entirely with the sensation of pain, inducing a violent withdrawal of the hand. Here sensation, reaching a maximum, has quite driven out the group of tactual perceptions, and even visual perceptions are to that extent held in abeyance, that for the moment they cease to occupy the attention. If now a piece of soap is taken from its dish, the newly aroused 167 COSMIC PHILOSOPHY group of sensations, of weight, hardness, smooth- ness, and the rest, exist in minimum intensity ; and consciousness is occupied, not with them, but with the presence of the piece of soap : per- ception tends to exclude sensation. " What, now," inquires Mr. Spencer, " is the real nature of this mutual exclusion? Is it not an instance of the general fact that con- sciousness cannot be in two equally distinct states at the same time ; and that in proportion as the predominance of one state becomes more marked, the suppression of other states becomes more decided? I cannot know that I have a sensation without, for the moment, having my attention specially occupied with that sensation. I cannot know the external thing causing it, without, for the moment, having my attention specially occupied with that external thing. As either cognition rises, the other ceases." By the " external thing," Mr. Spencer does not here mean the Ding an sichy but the group of phenomena which are referred to an existence outside of the organism. But we have already seen that, when consciousness is so occupied with such a group of phenomena that the result is the perception of an object, the psychical act involved is an automatic classification of sun- dry states of consciousness and of the relations between them, according to their various Kke- nesses and unlikenesses. Thus we arrive at the i68 THE COMPOSITION OF MIND distinction between sensation and perception. Impossible as it is to disentangle the two in practical experience, analysis yet distinguishes the former as an apparently elementary state of consciousness, while the latter is " a discern- ing of the relations between states of conscious- ness." According, therefore, as attention is directed chiefly to a conscious feeling or to the relations between a number of feelings, is now sensation and then perception predominant. It remains to be observed that sensations, or — as we may otherwise call them — feelings, are either peripherally or centrally initiated. In other words, a feeling may either originate at the surface of the organism — as Is the case with sensations of sight, hearing, smell, taste, and touch, and In the main with muscular and thermal sensations ; or it may originate In the interior of the organism — as is the case with the sensations of hunger and repletion, and with certain muscular sensations, such as cramp ; or, again, it may start from some group of nerve centres, as is the case with those vague feelings which accompany more or less complex acts of perception and reasoning, and which, when they acquire a certain degree of prominence, we call emotions. By the inclusion of these states of consciousness, the term " feeling " covers a somewhat wider range of meaning than the term " sensation." Nevertheless the current use 169 COSMIC PHILOSOPHY of the word " feeling " to designate indiffer- ently a sensation or an emotion bears uncon- scious witness to the fact that the two kinds of psychical state differ only in their modes of genesis and of composition. The contrast be- tween a peripheral sensation, as of colour or touch, and an emotion, is chiefly a contrast in degree of definiteness and of localization. But this contrast holds also between peripheral sen- sations and such vague internal sensations as hunger, which, being known as cravings, are assimilated to the lowest orders of emotion. From this difference in definiteness arises the fact that the peripheral sensations admit of being definitely grouped according to their re- lations of likeness and unlikeness, and thus afford the material for perception and reasoning, while emotional states admit no such definite grouping, but arrange themselves variously in clusters, the particular character of the cluster being determined by certain contemporaneous perceptions or ideal reproductions of past per- ceptions. For these reasons the ultimate psy- chological nature of emotion can be reached only through a synthetical interpretation which starts by recognizing the fadt that, along with that classifying of conscious states which occurs in perception and reasoning, there goes on a recognition of certain states as pleasurable or desirable to retain in consciousness, and a re- 170 i THE COMPOSITION OF MIND cognition of certain other states as painful or desirable to expel from consciousness. Thus in practical experience emotions are, in however slight a degree, inseparably associated with per- ceptions and inferences, as the vague, internally initiated feelings accompanying the definite pe- ripheral feelings in the classifying of which the perceptions and inferences consist. Looking back now over the region already traversed, we find that we have passed in review a large number of mental operations which dif- fer immensely in complexity, some of them be- ing performed only by the most highly educated adult civilized men, while others are performed habitually by children, barbarians, and numer- ous animals inferior to man. Yet, amid all this diversity, our analysis has detected a fundamen- tal unity. In spite of their vast differences in complexity, we have seen that all these mental operations are ultimately made up of the same psychical process. The grouping of the rela- tions among feelings is the elementary act which is repeated alike in each simple and direct act of perception, and in each complicated and in- direct act of ratiocination. At the present stage of our analysis, therefore, the ultimate elements of mind would seem to h^ feelings and the rela- tions between feelings. It remains to add that relations themselves must be secondary feelings due to the bringingtogether of primary feelings. 171 COSMIC PHILOSOPHY We can know a relation only as some modifica- tion of consciousness resulting from some com- bination of the feelings directly aroused in us by inner or outer agencies ; and such modification of consciousness must be itself a kind of feeling. For further illustration let us briefly mention the different relations in the order of their de- creasing complexity, that we may note the fun- damental relation involved in them all. The most complex relations are those of similarity and dissimilarity, as exemplified when we recog- nize the kinship between a thoroughbred race- horse and a Shetland pony, or the complicated divergences between a city and a village. Sim- pler relations are those of cointension and non- cointension, as when we perceive that two sounds are equal in degree of loudness, or that in grasp- ing wood and in grasping marble the feelings of temperature are different in degree ; of coex- tension and non - coextension, as when two lines or two areas are seen to be equal or unequal ; of coexistence and non-coexistence, as when the yellow - reddish light reflected by an orange is regarded as accompanied by sweetness and juiciness, but not by viscidity; o{ connature and non-connature, as when greater warmth is men- tally assimilated to less warmth, but distin- guished from blueness or roughness. Now, underlying all these relations, and all mental processes whatever, is the relation of likeness 172 THE COMPOSITION OF MIND and unlikeness between primary states of con- sciousness. Given the power of recognizing two feelings or conscious states as like each other, and two other feelings or conscious states as unlike each other, and we have the primordial process in the manifold compounding of which all operations of intelligence consist. Let us now take into the account the universally admitted fact that consciousness is rendered possible only by ceaseless change of state — that a uniform state of consciousness is in no respect different from complete unconsciousness. If our minds were to become spellbound, like the palace of the Sleeping Beauty, all our thoughts and feel- ings remaining fixed in statu quo, our conscious existence would be practically at an end. For consciousness to exist at all, it is necessary that a given state should be followed by a different state. But this is not all that is required. A succession of feelings, of which no two were alike, would not give rise to consciousness, since the recognition of any feeling implies its classi- fication with some antecedent like feeling. Con- sciousness, therefore, " is not simply a succession of changes, but an orderly succession of changes — a succession of changes combined and arranged in special ways." Thus we reach the law of the Composition of Mind. Since intelligence can- not arise or continue unless consciousness is continually passing from one state into a differ- 173 COSMIC PHILOSOPHY ent state, it follows that there must be a contin- uous differentiation of states ; and again, since intelligence cannot arise or continue unless par- ticular states of consciousness are continually- known as like certain previous states, it follows that there must be a continuous integration of states. Alike in the most rudimentary percep- tion and in the most developed reasoning, the essential process is the separation of the unlike and the bringing together of the like. So that, " under its most general aspect, all mental action whatever is definable as the continuous differentia- tion and integration of states of consciousness^' and the kind of mental action is regarded as high or low, according to the greater or less extent to which the differentiation and integration are carried. The phenomena of conscious intelli- gence are thus seen to conform to the universal law of evolution ; and we may further note that this conclusion is entirely in harmony with the definition of psychical life as the continuous ad- justment of inner to outer relations. For clearly, when an intelligence is developing in the midst of a complex environment, the greater the num- ber of subjective relations which are adjusted to objective relations, the greater will be the extent to which the differentiation and integration of conscious states will be carried. Here we may seem to have arrived at a sat- isfactory conclusion of our analysis. But the 174 THE COMPOSITION OF MIND lowest depths of the problem yet remain to be sounded, as will be seen when we consider a superficial objection not unfrequently urged against the foregoing views. Alike in all the mental operations which have formed the sub- ject matter of our analysis, we have seen that the relations of likeness and unlikeness entering into the case are classified with certain other relations of likeness and unlikeness previously cognized. The thought which determines the astronomer in calculating the moon's distance implies previous experience of triangles and of numerical relations. In the classification of a giraffe there is implied previous acquaintance with the complex relations of structure and function connoted by the terms ruminant^ ungu- late^ monodelphian, mammal, vertebrate, and ani- mal. The perception of an apple implies nu- merous antecedent experiences of colour, size, configuration, smoothness, odour, and taste. And in like manner, though we have provision- ally defined a sensation as an " elementary state of consciousness," yet we have also seen that, in order to become truly conscious of a sensa- tion, we must know it, or, in other words, must classify it with some like sensation previously felt. In short, we have seen that there can be no cognition, of whatever order, which is not a recognition, necessarily implying some previous combination of psychical states. How then, it 175 COSMIC PHILOSOPHY is asked, can there be any first cognition ? How can intelligence ever begin at all, if the first and simplest intelligent act implies a reference to experiences which, in accordance with the theory, must have preceded any intelligent act ? Formidable as this objection may seem, and unanswerable as it would have been if urged half a century ago, it has to-day no force what- ever ; and those who now deliberately urge it succeed only in betraying their entire lack of acquaintance with the progress which psycho- logy has made since the times of Reid and Stew- art. As long as psychological questions were settled simply by introspection — by observing what goes on in the consciousness of adult civil- ized man — the objection here cited must have seemed conclusive. But familiarity with the con- ception of evolution has now led us to regard things in general, not as coming at once into fulness of being, but as gradually beginning to be; and in the case of the phenomena of intel- ligence, this view of the question is amply jus- tified by experiments in objective psychology presently to be mentioned. The conception of an absolutely first cognition, not determined by previous psychical states, rests upon a fallacy similar to that upon which rested the preforma- tion theory in biology. Just as it was formerly held that the embryo started as a fully devel- oped organism, differing from an adult organ- 176 I THE COMPOSITION OF MIND ism only in size, so the objection which we are now considering involves the hypothesis that the earliest cognitions of an infant are like those of an adult in point of definiteness, the only differ- ence being in the quantity of them. The latter hypothesis is as contrary as the former to the Doctrine of Evolution, and it is quite as de- cidedly negatived by the observation of facts. For let us observe what is implied by the ac- quiring of a definite cognition by an infant. If the foregoing analysis be taken as correct, it is obvious that when any object, as an orange, is first presented to the mind of an infant, it can- not be perceived or identified as an orange. Be- fore this intellectual feat can be achieved, there must go on for some time that complicated grouping of visual, tactual, and gustatory sen- sations above described. In accordance with the established theory of vision, we must admit that, when the orange is held before the child's eye, the only sensation aroused is that of a red- dish-yellow colour, which cannot even be per- ceived to be round until after it has been asso- ciated with sundry tactual sensations. But this is not all. Not even the sensation of a reddish- yellow colour can acquire definite shape in con- sciousness, until sensations of blue, or red, or green, or white colour have been aroused, with which it can be contrasted, and until a subse- quent like sensation of reddish-yellow colour VOL. Ill 177 COSMIC PHILOSOPHY has been aroused to which it can be assimilated. Observe now the position into which we are brought. We are obHged to hold that the first sensation of orange colour cannot, strictly speak- ing, exist as a sensation at all ; while, neverthe- less, a subsequent sensation of orange colour (not, in any actual case, the second, but the twentieth or hundredth) occurring after inter- vening sensations of blue or green, can acquire definite shape as a sensation by being compared with this first sensation which is not strictly a sensation. Obviously then, though the first presentation of orange colour cannot awaken a visual sensation which can be known as such, it must produce some psychical state which is real, though not known. For if no psychical state were produced by the first presentation, then the second, or twentieth, or hundredth presen- tation could no more awaken a definite state of consciousness than the first. We are thus led to the assertion that states of consciousness may be produced by the differential grouping or com- pounding of psychical states which are beneath consciousness. Now this conclusion, which, admirably ex- plains the beginnings of conscious intelligence in the young child, is completely confirmed by experiments lately made with reference to the continuous genesis of sensations in the adult. Not only does the infant frame its earliest con- 178 THE COMPOSITION OF MIND scious sensations by the compounding of un- conscious or sub-conscious psychical changes, but in every sensation of sound, colour, odour, taste or touch which the adult receives, there is a precisely similar formation of a conscious state by the compounding of unconscious or sub-con- scious psychical states. In the case of sound, the evidence for this statement amounts to com- plete demonstration ; the evidence is hardly less strong in the case of sight ; and in the case of the other senses, all the evidence thus far ob- tained points toward the same conclusion. Let us first examine the composition of a sensation of sound, as admirably elucidated by M.Taine in his recent treatise on "Intelligence." In musical sounds three characteristics are to be distinguished — loudness, pitch, and quality or timbre. The first of these, the loudness, de- pends upon the amplitude of the atmospheric waves by which the sensation of sound is caused. A series of sound-producing waves, like any other series of waves, has its elevations and de- pressions, and the height of the elevation above the depression is called the amplitude of the wave. The loudness of the sound varies as the square of the wavers amplitude. From this it follows that every elementary sound has a period of minimum intensity, answering to the wave's minimum amplitude when it is just beginning to rise ; secondly, a period of maximum inten- 179 COSMIC PHILOSOPHY sity answering to the wave's maximum ampli- tude when it has risen to its greatest height ; and, thirdly, a period of minimum intensity, answer- ing to the wave's minimum amplitude when it has sunk nearly to the level again ; while be- tween these minima and the maximum there are many varying degrees of loudness. In other words, every elementary sound is at first faint, then gradually becomes loud, then grows fainter, till it disappears. Now note what happens when elementary sounds are made to succeed each other. If the succession be irregular, there is a mere chaos of noises — a case with which we need not here deal. But if the succession be regular, and steadily increase in rapidity, there follows a remarkable series of results. As long as the waves or pulses answering to the elemen- tary sounds succeed each other slowly, the sounds are distinguishable from each other as raps or puffs, according to the instrument employed, and each has its maximum and its two minima of intensity. But when the waves begin to strike the ear at the rate of about sixteen in a sec- ond, the consciousness of separate raps or puffs becomes evanescent, and there arises the con- sciousness of a continuous tone of very low pitch. That the consciousness of the separate sounds has not quite ceased, and that the con- tinuousness of the tone which they compose is not complete, are shown by the fact that the 1 80 THE COMPOSITION OF MIND maxima and minima are still perceived. In the deepest bass notes of an organ, for example, the pulsations are clearly distinguishable — a fact which proves that we are conscious of the effects answering respectively to the protuber- ances and to the hollows of the waves. Now, the pitch of a tone depends upon the rapidity with which the waves succeed each other, and, therefore) upon their length, or the distance between two successive hollows, because as the waves come faster they grow shorter. The shorter the waves, the higher the pitch. Hence, as the pitch rises, the protuberance of any wave approaches nearer and nearer to the pro- tuberances of the waves immediately behind it and in front of it, and the maximum intensities of sound which answer to the protuberances be- come crowded together in consciousness. The result is that, after a while, the maxima and minima are no longer distinguishable by the ear, so that by no effort of attention can we dis- cern the elementary pulses of which the tone is composed. The tone asserts itself to be com- pletely homogeneous. All that mere introspec- tion could discover in consciousness would be an apparently simple sensation of musical tone. Yet into the composition of this sensation there enter a thousand or several thousand psychical states, answering to the presence of as many ele- mentary sounds with their maxima and minima i8i COSMIC PHILOSOPHY of intensity. And if any one of these elemen- tary sub-conscious psychical states were absent, the character of the conscious sensation would be different from what it is. But this is not all. Every musical tone has a timbre or quality of its own, according as it pro- ceeds from a piano, a violin, a flute, or any other instrument. Now, Helmholtz has proved that the quality of any tone is due solely to the number and combinations of certain higher and fainter tones which accompany it. Along with the fundamental note there are heard sundry harmonic notes, due to vibrations from two to ten times more rapid than those which consti- tute the fundamental note. When any note is sounded on the piano, the first six harmonics are sounded with it ; when the same note is sounded on the violin, by means of the bow, the first six harmonics are sounded so feebly as to be overpowered by the seventh, eighth, ninth, and tenth ; and this is the only cause of the diflPerence in quality of tone between the piano and the violin. Now, by an effort of attention these harmonic over- tones may be recognized as distinct sensations when two or three notes are slowly struck. But in ordina- rily rapid playing they are not distinctly recog- nized. Their only effect is to impart to the tones that peculiar quality which enables the ear to recognize the instrument from which they 182 THE COMPOSITION OF MIND emanate. Thus our apparently simple sensa- tions of musical sound are enormously complex. When ¥-in-alt is sounded on the violin, there are produced, in the course of a single second, several thousand psychical states which together make up the sensation of pitch, fifty-five times as many psychical states which together make up the sensation of quality, and an immense number of other psychical states which together make up the sensation of intensity. These psy- chical states are not, in any strict sense of the term, states of consciousness ; for if they were to rise individually into consciousness, the re- sult would be an immense multitude of sensa- tions, and not a single homogeneous sensation. There is no alternative, therefore, but to con- clude that in this case a seemingly simple state of consciousness is in reality compounded of an immense multitude of sub-conscious psychical changes. Returning now to what we have called the elementary sound, by the manifold compound- ing of which all cognizable tones, qualities, and intensities are built up, we shall the more read- ily yield to the evidence which shows that even this primitive unit of sound is not elementary. For as M. Taine observes, each so-called ele- mentary sound, in passing from its minimum to its maximum, passes through an infinite series of degrees of intensity, and, unless there were 183 COSMIC PHILOSOPHY some psychical modification corresponding to each increment of intensity, there would be no state of consciousness answering to the total rise from the minimum to the maximum. Again, while, for simplicity's sake, we have assumed that each of the raps or puffs which occur too slowly to be heard as a single tone of lowest pitch is heard by itself as an elementary sensa- tion, this is not strictly true. For the so-called simple sensation must be either a sensation of musical tone or a sensation of noise. In the former case its composite character has been already shown. In the latter case, in the sensa- tion of noise, rap, or puff, the truly primitive elements are sub-conscious psychical states an- swering to successive waves of unequal lengths. Any one of these waves by itself will not pro- duce a genuine state of consciousness ; it is only by compounding the sub-conscious psychical affections which they severally produce, that we obtain the so - called elementary sensation of noise or rap. In every way, therefore, the conclusion is forced upon us that every one of our apparently simple auditory sensations is made up of a vast multitude of psychical affections, of which the really simple ones would never rise into con- sciousness save by being joined with others. Our simplest cognizable sensation of sound is 184 THE COMPOSITION OF MIND in reality a compound of the fourth or fifth, or even of some higher, order. In the case of visual sensations, the same con- clusion is reached by a precisely similar argu- ment, sensations of colour differing from those of sound only as answering to wave lengths immeasurably shorter and more rapid in suc- cession. It is unnecessary to insist upon the manifold analogies between sound and light, which are each day brought more vividly before the attention of the physical inquirer, as, for ex- ample, in the wonderful but plausible hypothe- sis lately propounded, that all the lines in the spectrum are simply the harmonic over-tones of a fundamental colour, which, being a couple of octaves below red, is itself invisible. Restrict- ing our statement to ascertained points of re- semblance, it may be said that the argument from the phenomena of musical pitch applies step by step to the phenomena of colour as we rise in the scale from red to violet ; the only difference being that, as the slowest vibrations which the eye receives occur at the rate of about 458,000,000,000,000 in a second, we cannot experimentally distinguish, as in the case of the lowest sounds, the seemingly elementary sensa- tion which answers to each couple of vibrations. Nevertheless, from experiments with the elec- tric spark it has been shown that a sensation of 185 COSMIC PHILOSOPHY light which endures for one second is composed of at least a million successive sensations, each one of which, if separately excited, would rise into consciousness and be recognized as a flash of light. Now, as this flash of electric light is cognized as white, it follows that the cog- nizable sensation which lasts for one millionth of a second is really made up of at least three sub-conscious psychical states, which, if they were severally to rise into consciousness, would be severally cognized as red, green, and violet flashes, — these being the primitive elements of which the consciousness of white light is com- posed.^ This fact alone shows that the method by which a sensation is formed out of sub-con- scious psychical changes is essentially the same in the eye and in the ear. No such elaborate investigations have been made with reference to the other peripheral sen- sations. Yet in the cases of smell and taste, the argument is not essentially different from what it is in the cases of hearing and vision. The physical antecedent, either of smell or taste, is a chemical reaction between particles of the odorous or sapid substance, and the ends of the olfactory or gustatory nerve fibrils. Now, a chemical reaction implies an enormous number 1 [This assertion is based upon hypotheses as to the nature of colour vision which are no longer generally held by recent experimental psychologists.] i86 THE COMPOSITION OF MIND of undulatory movements by which myriads of molecules are seeking to reach a position of equilibrium. Accordingly, the end of the nerve fibrils in the olfactory chamber or in the tongue must be rapidly smitten by little molecular waves, just as the auditory filaments are smitten by atmospheric waves ; and thus there is indi- cated a course of argument similar to that em- ployed in the case of sound. It may be fairly argued that if each wave does not produce some sub-conscious psychical effect, the sum of the waves will not produce a state of consciousness known as smell or taste ; so that here too the seemingly primitive sensation is really deriva- tive and compound. M. Taine*s argument with reference to the tactile sensations is singularly beautiful, but no room is left for more than the briefest allusion to a few of its salient points. All tactile sensa- tions are either dermal or muscular ; that is, they are due either to disturbances of nerve fibrils embedded in the skin, or to disturbances of nerve fibrils embedded in the extremities of the muscles lying under the skin. In the first case, the sensation is either of contact or of tempera- ture ; in the second case, there is a sensation of resistance or pressure ; and in both cases, when the sensation proper to the nerve is prolonged or intensified beyond a certain degree, it is at first accompanied and finally supplanted by a 187 COSMIC PHILOSOPHY sensation of pain. Now, Weber's experiments have shown that these differences in sensation are not due to the excitation of distinct nerves, but to the differently combined excitation of the filaments of the same nerves. The differ- ence between the sensation of contact and the sensation of temperature depends upon the order in which the filaments of a particular nerve are set in vibration. And thus, as Fick observes, we may understand why it is difficult to distin- guish between a prick from a needle and a mi- nute burn from a spark of fire ; for the nearer we approach to a truly elementary sensation, the more evanescent becomes the distinction be- tween the compound sensation of temperature and that of mechanical contact. On the con- trary, when a larger area of skin is suddenly rubbed or burned, so that enough nerves are brought into play to compound the elements of the sensations, then there is no difficulty in dis- tinguishing the feeling of temperature from that of mechanical contact. From these and many other kindred facts, to which scanty justice is done by this cursory allusion, M. Taine very plausibly concludes that our ordinary tactile sen- sations are made up of little component psychi- cal affections differing only in number, order, and duration ; while, according as these elemen- tary psychical states are differently compounded, they form conscious sensations which, as pre- i88 THE COMPOSITION OF MIND sented to consciousness, seem to be severally simple and distinct in kind.^ Throughout this remarkable analysis ques- tions are suggested which can be completely answered only when physics and chemistry, as well as physiology and psychology, are much more advanced than at present. Yet there are three important principles which we may regard as established in the case of sound, and as clearly indicated in the case of the other sensations. The first is, that sensations which are apparently simple and elementary, and which cannot be analyzed by mere observation of consciousness, are nevertheless compounded of many succes- sive and simultaneous sensations, which are themselves compounded of still lower psychical affections. The second is, that two sensations, which differ only in th-e mode in which their elements are compounded, may appear in con- sciousness as generically different and irreducible to each other. The third is, that two or more psychical affections which, taken separately, are as non-existent to consciousness, may, neverthe- less, when taken together, coalesce into a sen- ^ [The progress of Experimental Psychology has now ren- dered this paragraph antiquated. Both the empirical details regarding the skin sensations and the theory of their relations to the organs of sensation have entered upon a new stage since the discovery of the ** temperature points " in 1884 (by Blix, Goldscheider, and Donaldson).] 189 COSMIC PHILOSOPHY satlon which is present to consciousness. And when these three conclusions are presented in a single statement, they become equivalent to the conclusion above obtained from examining the beginnings of conscious intelligence in an infant ; namely, that states of consciousness may be pro- duced by the differential grouping or compound- ing of psychical states which are beneath con- sciousness. This result is in entire harmony with what might be inferred a priori from the known char- acteristics of nerve action. Whether in the gray substance of ganglia, or in the white substance of nerve fibres, the physical action which ac- companies psychical changes is an undulatory displacement of molecules resulting in myriads of little waves or pulses of movement. From this fact we might have suspected that, as a cog- nizable state of consciousness is attended by the transmission of a number of little waves from one nerve cell to another, so the ultimate psy- chical elements of each conscious state must correspond to the passage of these little waves taken one by one. And this inference, which by itself would be only a plausible guess, is raised to the rank of a scientific hypothesis by its harmony with the results of the analysis above sketched. Thus we are led to infer, as the ultimate unit of which Mind is composed, a simple psychical 190 THE COMPOSITION OF MIND shocks answering to that sim^\t physical pulsation which is the ultimate unit of nervous action. By the manifold and diverse compounding of myr- iads of such primitive psychical shocks, accord- ing to the slight structural differences of differ- ent nerves, are formed innumerable elementary sensations, which appear to be generically differ- ent ; just as aquafortis and laughing-gas, which seem generically different, yet differ really only in the proportions of nitrogen and oxygen which compose them. By a similar differential com- pounding of these elementary sensations, we get complex sensations of blueness and redness, warmth, pressure, sweetness, roughness, and of various kinds of timbre and degrees of pitch. Carrying still farther the same process of differ- entiation and integration, we rise step by step to perceptions of greater and greater complexity, to conscious classifications, and to reasoning in its various forms, from the crude inferences of the child, barbarian, or boor, to the subtle and indi- rect combinations of the artist and the scientific discoverer. Thus amid all their endless diver- sities we discern, though dimly, a fundamental unity of composition throughout all orders of psy- chical activity, from the highest to the lowest.^ ^ [For a later criticism of this Taine-Spencer theory of the composition of mind, which might well have modified Fiske's acceptance of the theory had he rewritten this chapter, see James, Principles of Psychology y vol. i. pp. 1 5 1 sqq. ] 191 COSMIC PHILOSOPHY Near the close of his first edition of the " Ori- gin of Species," Mr. Darwin predicted that the establishment of his theory would eventually place the science of psychology upon a new basis — that of the acquirement of each mental faculty by slow gradations.^ We seem now to have fairly started upon the path which leads to this desired goal. For while, among the mental operations above analyzed, some are pe- culiar to the highest human intelligence, there are others which are shared by the highest and the lowest human intelligence. Others — as the simplest inferences, several complex perceptions, and all the most simple ones — are shared by all human intelligence with the intelligence of apes, dogs, horses, and indeed of the majority of mammals, many birds, and possibly some lower animals. Others, again — as the simplest perceptive acts implied in recognizing a sensa- tion— must be shared with all those animals whose nervous system is sufficiently complex to allow of their having any consciousness what- ever. While others, finally — as the simplest sub-conscious groupings of primitive psychical shocks — must be shared by humanity with all 1 Mr. Darwin has since recognized that this new basis is already well laid by Mr. Spencer. See Origin of Species, 6th edition, p. 428. Indeed the Principles of Psychology, upon which the present chapter is almost entirely founded, was first published in 1855, four years before the Origin of Species. 192 THE COMPOSITION OF MIND those forms of animal existence which possess any nervous structure whatever. For instance, that reflex action which occurs when the foot of a sleeping person, casually moved into a cold part of the bed, is quickly withdrawn without arousing any state of consciousness, involves the activity of a fragment of the human nervous system which corresponds in general structure to the entire nervous system of a medusa or jelly-fish. In such lowly creatures, then, we must suppose that the psychical actions which go on are similar to our own sub-conscious psy- chical actions. And, clearly, if we could trace the slow increments by which the nervous sys- tem has grown in heterogeneity, definiteness, and coherence, during the countless ages which have witnessed the progress from the primeval marine vertebrate to the civilized modern man, we should also be able to trace the myriad stages of the composition of mind, from the reflex contractions of a rudimentary fin, up to the generalizations of an Aristotle or a Newton. 193 CHAPTER XVI THE EVOLUTION OF MIND^ THAT the amount of intelligence mani- fested by any vertebrate animal depends to a certain extent upon the amount of nerve tissue integrated in its cephalic ganglia, and especially in the cerebrum, is a truth famil- iar to every one, though often crudely stated and incorrectly interpreted. In the lowest ver- tebrate, the amphioxus, there is no brain at all. In fishes, the cerebrum and cerebellum are much smaller than the optic lobes ; the cerebrum being in many large fishes about the size of a pea, though in the shark it reaches the size of a plum. Continuing to grow by the addition of concentric layers at the surface, the cerebrum becomes somewhat larger in birds and in the lower mammals. It gradually covers up the optic lobes, and extends backwards as we pass to higher mammalian forms, until in the an- thropoid apes and in man it covers the whole upper surface of the cerebellum. In these high- est animals it begins also to extend forwards. In the chimpanzee and gorilla the anterior portion 1 [See Introduction, § 21.] 194 THE EVOLUTION OF MIND of the cerebrum is larger than in inferior mam- mals ; but in these animals, as in the lowest races of men, the frontal extension is but slight, and the forehead is both low and narrow. In civilised man, the anterior portion of the cere- brum is greatly extended both vertically and laterally. As already observed, the most pro- minent physiological feature of human progress has been the growth of the cerebrum. The cranial capacity of an average European exceeds that of the Australians and Bushmen by nearly forty cubic inches ; and the expansion is chiefly in the upper and anterior portions. But this parallelism between increased in- telligence and increased size of the cerebrum is complicated by a further parallelism between the amount of intelligence and the irregular creasing and furrowing of the cerebral surface. In the higher mammals both the cerebrum and the cerebellum are convoluted. But the con- volutions do not correspond with any " bumps," real or imaginary, on the external surface of the skull ; they are not symmetrical on opposite sides, like the fancied " organs " of the phreno- logists ; nor indeed, so far as the general brain surface is concerned, do they constitute eleva- tions and depressions at all. The surface of the brain does not resemble a group of hills and valleys, but rather a perfectly smooth table-land cut here and there by very steep and narrow 195 COSMIC PHILOSOPHY chasms. A perfectly smooth lump of butter, irregularly furrowed by a sharp knife held per- pendicularly, would present a surface like that of the human brain. Now the amount of intel- ligence depends in some way on the number and irregularity of these furrows. In the low- est monodelphian mammals, as the rodents and the lowest monkeys, there are no furrows, or only a few very shallow ones. In the carnivora and ungulata there are numerous furrows, some of them tolerably deep, but all of them sym- metrically arranged. As we proceed to the higher apes, we find the furrows increasing in number and depth, though not yet losing their symmetry of arrangement. Idiots, young chil- dren, and adult savages have these creases few and regular ; and in the lower races their ar- rangement is similar in different individuals. But in civilized man the creases are very nu- merous, deep and irregular ; and they are not alike in any two individuals.^ ^ Phrenologists have done good service by familiarizing the unlearned public with the fact that the quantity of mental capacity is related to the quantity of brain. But the character of this relationship is seriously misinterpreted both by phreno- logists and by the rest of the unlearned public. It is impossible to say that a man with an unusually large head must be a man of unusual mental capacity, because the quantity of mental capacity depends on many other factors besides quantity of brain. It not onlv depends upon the sinuous creasing of the brain-surface here described, which can in no wise be detected by an examination 196 THE EVOLUTION OF MIND 'The convolutions into which the human brain is divided by these furrows consist for the most part of " eight distinct and concentric layers, formed chiefly of closely packed fibres, and of crowds of cells of very different shapes, the layers differing in the relative proportion of cells and fibres, and in the manner of their arrangement." ^ Each cell sends forth processes with which the tissue of certain fibres becomes continuous. The office of the fibres is to es- of the outside of the head, but it also depends largely, as Mr. Lewes well reminds us, upon the very important element of vascular irrigation. ** Many individual variations in mental character depend on the variations in the calibre of the cere- bral and carotid trunks — and many variations in the intellec- tual, emotive, and active tendencies depend on the relative importance of the cerebral and carotid trunks. The energy of the brain depends mainly on the calibre of its arteries ; the special directions of that energy depend on the territorial dis- tribution,'*^ Problems of Life and Mind, vol. i. p. 151. Again, the quantity of available mental energy which can be evolved in a given period of time depends, to a very great extent, upon the efficiency with which the blood is supplied with oxygen and freed from carbonic acid ; so that mental capacity not only depends upon capacity of brain, but also upon capacity of lungs and Hver. In short, a thorough exam- ination shows that while Mind is most directly correlated with Brain, it is indirectly but closely correlated with the entire organism. So that the attempt to estimate individual differ- ences in mental capacity by referring to brain-size alone is an utter absurdity. ^ Maudsley, Physiology and Pathology of Mind, p. 55. 197 COSMIC PHILOSOPHY tablish communication between the cells.^ Be- tween millions of these cells there run millions of fibres, establishing communications in all directions. And the elaborate researches of Schroeder van der Kolk have gone far to prove that the shapes of the cells and the intricacy of their communications vary with the amount of intelligence. In various forms of mental dis- ease, both cells and fibres undergo pathological changes, such as atrophy, hardening, softening, or some other form of degeneration. That is to say, not only are the activities of the cells impeded, but the channels of communication are variously obliterated or blocked up. Between these fibres and cells there are dif- ferences of molecular structure implying differ- ences in molecular activity. While the matter composing a cell is built up in enormously com- plex aggregates of molecules, wholly unshielded from external disturbance, the nerve matter of a fibre is protected throughout its entire length by a membranous sheath. And while it is probable that the action going on in a cell con- sists in the continual fall of unstably arranged molecules into a state of more stable equili- brium, from which a fresh rush of blood is con- tinually raising them to their former unstable state ; it is probable that the action going on ^ [The form of statement here would be somewhat modi- fied in the light of the modern ** neuron theory."] 198 I^^n a THE EVOLUTION OF MIND I a fibre consists in the successive isomeric transformations and retransformations of the systems of molecules which make up the fibre. These conclusions are quite probable, though not proven. But it is entirely proved that a cell is a place where nervous energy is liberated, while a fibre is a path along which nervous energy is transmitted. Bearing all this in mind, it appears that the cerebrum and cerebellum are places where count- less centres are constantly liberating nervous energy, and where this liberated energy is con- tinually flowing along definite channels and from one centre to another. But to make the statement complete, we should add that much of the liberated energy is drafted off along cen- trifugal fibres into the corpora striata, whence it flows into the medulla and spinal centres, and is thus diflTused over the body. Omitting the further consideration of these circumstances, let us inquire into the meaning of this unceasing interchange of molecular motion between the innumerable cells crowded together in the cere- brum and cerebellum. In other words, what are the functions of these supreme ganglia ? That their functions are not in any degree the direct coordination of sensations and move- ments would appear from the fact that these direct coordinations are already made in the spinal cord and in the medulla. All the mus- 199 COSMIC PHILOSOPHY cular adjustments made in the trunk and limbs are effected either directly by the spinal centres, or indirectly by the sympathetic ganglia in co- operation with the spinal centres. The medulla coordinates all these muscular adjustments with the muscular adjustments of the face, and with the impressions received from the specialized organs of sense. It' is therefore highly improb- able that the supreme ganglia can be in any way directly concerned with these coordinations. And the improbability is increased by the fact that the cerebrum and cerebellum are as desti- tute of sensation as the free ends of the finger- nails. Scratch one of the spinal centres, and the result is tetanus. Scratch the medulla, and the whole body is thrown into terrible convul- sions. But the cerebrum and cerebellum may be scratched and sliced without pain or convul- sion. They take heed only of those impressions which are communicated to them indirectly. Countless multitudes of nerve fibres coming up from the medulla are gathered together in the corpora striata ; whence other fibres, continuing from them, radiate to the innumerable cells of which the supreme ganglia are composed. We must conclude, therefore, that the func- tions of the cerebrum and cerebellum are com- prised in the further compounding of the sen- sory impressions already compounded in the medulla. And as such compounding involves 200 I THE EVOLUTION OF MIND the reproduction of impressions received in lower centres, and also involves the coordina- tion of past with present impressions, we may- say that the supreme ganglia are the seats of the higher psychical life, — of memory, reason, emotion, and volition. Dr. Maudsley has thus appropriately termed them the ideational cen- tres. But between the functions of the two, thus closely related, there is nevertheless a dif- ference. Although the precise determination of the way in which ideational functions are shared between the two centres has long remained a puzzling problem, there is good reason for be- lieving that Mr. Spencer has solved the diffi- culty by assigning to the cerebellum the office of doubly compound coordination in space, and to the cerebrum the office of doubly compound coordination in time. The facts of comparative anatomy, and of comparative psychology, so far as known, are in harmony with this opinion. We saw in the chapter on Life and Mind that the extension of the correspondence in time at first goes on parallel with the extension of the correspondence in space — the increased area over which the organism can act being the mea- sure of its increased capacity for adapting its actions to longer and longer sequences in the environment. But we saw also that in the hu- man race the extension of the correspondence in time has gone on far more rapidly than the 20I COSMIC PHILOSOPHY extension in space — the most striking charac- teristic of intellectual progress being the ability of civilized man to adapt his inferences and ac- tions to remote contingencies. Side by side with these facts, comparative anatomy shows us that the cerebrum and cerebellum at first keep pace with each other in growth ; but as we reach those higher mammals which exhibit some de- gree of foresight, we find the cerebrum out- growing the cerebellum and overlapping it, — while in man the growth of the cerebrum has been so great as to render comparatively insig- nificant all other changes in the nervous system. With the enormous cerebrum of civilized man we may further contrast the preponderant cere- bellum in those carnivorous birds whose psy- chical life consists chiefly in the coordination of those extremely complex and remote space relations involved in the swooping upon prey from great distances. The human cerebellum is absolutely larger than that of such birds ; but its smallness relatively to the cerebrum is a fact parallel with the simplicity of the space relations which man coordinates, as compared with the time relations. Among the latter are comprised all our ideas of cause, motion, progress, — in a word, all manifestations of force which involve the relation of sequence. But these ideas make up by far the largest and most heterogeneous portion of our psychical life. 202 THE EVOLUTION OF MIND I am inclined to regard these considerations [as very powerful ones, — and there are several others which lead to the same conclusion. To present the case properly would require a whole chapter ; but it is not essential for our present purpose that the question should be decided. Whether Mr. Spencer's view of the respective functions of the cerebrum and cerebellum be [correct or not, it equally remains true that the class of functions shared by the two are idea- tional functions. They compound in double, triple, quadruple, or in far higher multiples, the sensory elements already simply compounded by the medulla. And it is in this compound grouping of impressions, past and present, ac- cording to their various degrees of likeness and unlikeness, that thought and emotion, the high- est phases of psychical life, consist.^ A moment ago we asked, what is the mean- ing of the ceaseless interchange of molecular motion which goes on among the innumerable cells of the brain ? We now see what is the meaning of it, for there can be but one mean- ing. The continual redistribution of nervous energy among the cells is the objective side of the process of which the subjective side is the ^ [The Spencerian theory, especially as to the functions of the cerebellum, would hardly have been defended by Fiske had he rewritten this chapter in the light of later research. A new era has since dawned in the physiology of the brain.] 203 COSMIC PHILOSOPHY recompounding of impressions. If we may for a moment unduly simplify the matter, it may be said that for every renewed grouping of im- pressions, for every revived association of ideas, there is a nervous discharge between two or more cells, along formerly used sets of transit fibres ; and for every fresh grouping of impres- sions, for every new connection of ideas, there is a discharge along new transit lines. In reality the matter cannot be so simple as this, since, as we shall presently see, the maintenance of consciousness implies a state of tension between many simultaneous discharges. But however great the complexity, the principle remains the same. If it be objected to this view that it obliges us to assume a vast amount of differentiation and integration in the brain, during the lifetime of single individuals, it may be replied that the assumption is fully sustained, both by sound deduction and observation. Not only does the brain increase in size and heterogeneity during the first twenty-five years of life, but ordinarily it increases in heterogeneity, and often in size, for many years later ; and in some cases it in- creases in heterogeneity until the end of life. The brain of a young child is in homogeneity like the brain of an ape ; the furrows are shal- low, symmetrical, and few in number. With advancing years they increase in number, depth, 204 THE EVOLUTION OF MIND and irregularity; and the increase is most marked in those persons who do the most brain work. In the brains of five very eminent men exam- ined by Wagner, the heterogeneity of surface is described as quite astonishing. Such facts prove that the operations of thought work strongly marked structural changes in individual brains, in the course of a few years. And as these strongly marked changes are but the summing up of countless little changes in the arrange- ments of cells and fibres, the inference is inevi- table that such little changes must be going on all the time. This is the testimony of observa- tion, and deduction might have taught us to expect as much ; since the molecules of nerve tissue are chemically by far the most unstable molecules known to science, ever ready to un- dergo metamorphosis and arrange themselves in new groups. Waste and repair go on more rapidly in the brain than in any other part of the body ; the cerebrum, weighing between three and four pounds, receives at each pulsation one fifth of all the blood sent from the heart, and if the supply is stopped for an instant, con- sciousness ceases. Where nutritive change is so excessively rapid, such structural changes as are involved in the continual setting-up of new transit lines must be readily effected. And quite in harmony with this course of inference is the fact that when cerebral nutrition is nota- 205 COSMIC PHILOSOPHY bly retarded, as by the anaemia and feeble cir- culation of disease or old age, new associations of ideas become difficult or even impossible. To sum up this whole preliminary argu- ment: the cerebrum and cerebellum are organs whose function is ideation or the generation of ideal feelings and thoughts. They are organs made up of a tissue in which chemical changes occur with unparalleled rapidity. We cannot see these changes go on, but we can equally well infer their general character when we have examined the chemical properties and molecu- lar structure of the tissue in which they occur. Microscopic and chemical examination of this tissue shows that these chemical changes must consist in a perpetual transfer of energy from one cell to another along transit lines composed of nerve threads. Bear in mind that the cell does not average more than one ten-thousandth of an inch in diameter, and that the quantity of matter contained in a transit line is almost infinitely small. Now since the cerebrum and cerebellum are, subjectively speaking, places where ideation is continually going on ; and since they are, objectively speaking, places where nerve cells are continually sending undulations back and forth along transit lines ; the inference seems forced upon us, that the transfer of an undulation from one cell to another is the ob- jective accompaniment of each subjective unit 206 THE EVOLUTION OF MIND of feeling of which thoughts and emotions are made up. And if this be so, it becomes a mere truism to say that the formation of a new asso- ciation involves the establishment of a new transit line, or set of transit lines, while the re- vival of an old association involves merely the recurrence of motion along old transit lines. That this is merely a hypothesis, I readily grant. Nevertheless it is a verifiable hypothesis ; it is in harmony with all that we know of nerve action ; and it may be held provisionally until some better one is propounded. When we pro- ceed to see how many phenomena it explains, we shall be, I think, quite ready to admit that, if it does not contain the whole truth, it must at least contain a foreshadowing of the truth. For we have now to note that, by a deduc- tion from an established law of molecular mo- tion, this hypothetical law of nervous action can be shown to explain that law of association which subjective analysis proclaims as the fun- damental law of intelligence. In the chapter on Life and Mind, we saw that the chief busi- ness of psychology is to answer the question how there comes to be established in the mind a relation between two subjective states x and y, answering to a relation between two phenomena A and B in the environment. How is it that there is a subjective relation between the idea of sweetness and the group of ideas comprised in 207 COSMIC PHILOSOPHY the visual perception of a peach, answering in some way to the objective relation between the coexistent properties of the peach, so that the presentation of the one to the cephalic ganglia is inevitably accompanied by the representation of the other ? This question lies at the bottom of psychology, and we have now to see how it is to be answered. The answer will lead us through a portion of the domain of molecular physics, and will incidentally give us a hint con- cerning the genesis of nervous systems. In the chapter on Matter, Motion, and Force, it was shown that all motion takes place along the line of least resistance, whether the motion be the movement of a mass of matter through a resisting medium, or the passage of a series of undulations through the molecules of an ag- gregate. Let us reconsider this truth in one of its concrete applications. When a wave of molecular motion traverses a mass of matter for the first time, the line of least resistance will of course be determined by the intimate structure of the mass. But now mark what happens. Immediately after the passage of the wave, the intimate structure of the mass, in the vicinity of the line along which the wave has travelled, is different from what it was a moment ago. The passage of the wave has pushed a linear series of molecules out of posi- tion, and a short time must elapse before these 208 THE EVOLUTION OF MIND molecules can return to their positions. There- fore if the first wave is instantly followed by a second, starting from the same point, the line already traversed will be the line of least resist- ance, even more decidedly than before. The second wave will encounter less resistance than the first wave, because it will find its work of altering the positions of the molecules already partly done for it. Thus, according to the mo- lecular mobility of the matter in question, the transit of succeeding waves, along the line once established, will rapidly become less and less hindered. And the process must go on either until the inertia of the molecules along the transit line opposes a minimum of resistance to the passage of the wave, or even until the en- ergy given out by the molecules in changing position adds to the momentum of the wave. In either case there is established a permanent line of least resistance, along which all subse- quent waves that start from the same point must travel. The most familiar illustration of this process is afforded by the facts of magneti- zation, which show " that the establishment of undulations along certain lines determines their continuance along those lines." ^ The case of ^ An illustration of this principle is perhaps to be found in the mellowing of old violins. According to Professor Tyndall, * * the very act of playing has a beneficial influence ; appar- ently constraining the molecules of the w^ood, w^hich in the VOL. HI 209 COSMIC PHILOSOPHY liquid matter flowing through solid matter — as when currents of rain water, percolating through loose soil, gradually break away obstructing par- ticles and excavate small channels which ulti- mately widen and deepen into river-beds — is a case in which similar dynamic principles are involved. In all these cases, " if we confine our attention to that part of the motion which es- caping transformation continues its course, then it is a corollary from the persistence of force that as much of this remaining motion as is taken up in changing the positions of the units must leave these by so much less able to ob- struct subsequent motion in the same direc- tion." ^ Now in the case of organic bodies, the enor- mously complex molecular changes involved in first instance were refi'actory, to conform at last to the require- ments of the vibrating strings." On Sound, p. 90. As Dr. Maudsley would say, ** musical residua " remain in the molec- ular structure of the wood. 1 Spencer, First Principles, y>' 248. [Part II. chapter ix. §81, near the close of the section.] Thus, though Mr. Mill is justified in saying (^Inaugural Discourse, p. 62) that " phy- siology is the first science in which we [distinctly] recognize the influence of habit — the tendency of something to happen again merely because it has happened before," — yet, as we here see, the phenomena of habit are foreshadowed in the in- organic world. An admirable instance of that continuity among phenomena which is everywhere impHed by the theory of evolution. 210 THE EVOLUTION OF MIND nutrition are such as to aid in the setting-up of the most perfect transit lines. In an inorganic mass the molecules have comparatively little mobility, and they do not leave their connec- tions from moment to moment, to be instantly replaced by new molecules. But the complex clusters of molecules which make up living tis- sue possess immense mobility, and they are con- tinually falling to pieces and getting built up again. Consequently the repeated passage of waves either of fluid matter or of molecular motion along a definite line of least resistance, not only changes the positions of the molecular clusters, but also modifies the nutritive changes by which the temporary equilibrium of the clusters is restored. Instead of a set of rela- tively homogeneous molecules, which are simply pushed aside and then tend to oscillate back again, the advancing wave encounters a heter- ogeneous edifice of molecules, which tumbles to pieces and is instantly rebuilt. But in the rebuilding the force exerted by the advancing wave has to be expended ; and the result is that in the rebuilt cluster there is a surplus tension exerted in the very direction in which the waves are travelling. The transit lines thus become far more permeable than any which can be es- tablished in inorganic bodies. The energy given out by the decomposing cluster of molecules adds to the momentum of the wave ; so that 211 COSMIC PHILOSOPHY the line of least resistance becomes to a certain extent a line of traction. A good illustration is afforded by the gradual evolution of the circu- latory system as we ascend in the animal scale. In the lowest animals which possess any nutri- tive fluid perceptibly distinct from the proto- plasmic jelly of which their bodies are com- posed, this fluid percolates here and there at seeming random, its course being determined by local pressures, just as in the case of rain water trickling through the ground. Now as we ascend to higher animals, we find that the nutritive fluid has wrought for itself certain channels, to which it confines itself, and which gradually become more and more definite in direction, and more and more clearly demar- cated from the adjacent portions of tissue. Un- til, when we reach animals of a high type of structure, we find the blood coursing through permanent channels, the walls of which contract and expand in such a way as to assist the blood in its progress. A similar explanation is to be given of the genesis of the contractile fibres of muscle, as due to the continuance of molecular undulations along certain lines. When we come to the nervous system, we find most completely realized all the conditions requisite for the rapid establishment of perma- nent transit lines. The clusters of molecules of which nerve tissue is composed are more heter- 212 THE EVOLUTION OF MIND ogeneously compounded than any other known systems of molecules ; and the alternate pulling to pieces and putting together of these clusters, which we call nutrition, goes on here with un- paralleled rapidity. Of all known substances, nerve is the most changeable, the most impres- sible, the most readily adaptable to changing combinations of incident forces : in short, the most easily diiferentiable and integrable. Hence we find that those long transit lines, known as afferent and efferent nerves, are not only so constituted that a wave of disturbance set up at one end is immensely increased before it reaches the other end, but are also protected by envel- oping clusters of molecules in such a way that none of the transmitted motion is allowed to es- cape laterally. Ease of transit is here witnessed at its maximum. Making use of these theorems of transcen- dental physics, and applying to the problem his vast and accurate knowledge of biological de- tails, Mr. Spencer has propounded a theory of the genesis of nervous systems of all orders of complexity, which, whether entirely or only par- tially true, must be regarded as one of his most brilliant achievements. In the lately published " Physical Synthesis," which concludes the first volume of his " Principles of Psychology," Mr. Spencer shows that the irritability which char- acterizes the entire surface of the lowest ani- 213 COSMIC PHILOSOPHY mals, and which probably consists in the iso- meric transformation of colloidal clusters of molecules distributed over the surface, must gradually become concentrated in certain defi- nite transit lines, just as the circulation of a nu- tritive fluid becomes confined to certain chan- nels : while the collision of waves which takes place wherever two or more of these transit fibres inosculate must result in such chemical changes, and in the gradual formation of such a structure, as characterize nerve centres. But the exposition, when carried into details, is alto- gether too abstruse to be profitably presented here, nor is it necessary for our present purpose. The explanation of the laws of association only requires that, starting with some kind of ner- vous system as already established, we should examine the character of the nutritive changes set up within it by environing agencies. The foregoing argument shows us that the most prominent characteristic of such changes is the formation of transit lines between neigh- bouring cells ; and we have seen that the more frequently a wave of molecular disturbance passes along any such transit line, the more easily will it pass, and the more difficult will it be to divert it into any other transit line. Hence in any complex aggregate of cells and fibres, like the human brain, we may expect to find a countless number of transit lines, of all 214 1 THE EVOLUTION OF MIND degrees of permeability. Those which have been oftenest traversed will be the most perme- able, and those which are traversed only at rare intervals will be but slightly permeable ; while the passage of a nervous discharge in a new di- rection will involve the differentiation of a new line of transit. Now subjective psychology furnishes us with an exact parallel to this state of things. The profound analysis of conscious changes carried on by the English school of psychology since the time of Hobbes, and accepted by the Kan- tian school in all save a few very important instances — which we shall presently see to be similarly explicable — has ended in the conclu- sion that states of consciousness cohere with a strength dependent upon the frequency with which they have been repeated in experience. In other words, "the persistence of the connec- tion between states of consciousness is propor- tionate to the persistence of the connection be- tween the agencies to which they answer." This fundamental law of association is illustrated by such familiar truths as the following : " that phenomena wholly unrelated in our experience, we have no tendency to think of together ; that where a certain phenomenon has occurred in many relations, we usually imagine it as recur- ring in the relation in which it has most fre- quently occurred ; that when we have witnessed 21S COSMIC PHILOSOPHY many recurrences of a certain relation we come to have a strong belief in that relation ; that if a relation has been daily experienced through- out life with scarcely an exception, it becomes difficult for us to conceive it as otherwise — to break the connection between the states of con- sciousness representing it ; and that where a relation has been perpetually repeated in our experience with absolute uniformity, we are en- tirely disabled from conceiving the negation of The correspondence between the subjective and the objective sides of the phenomena is thus complete, and the increasing complication of cell and fibre in the brain, from infancy to old age, is seen to have a psychological mean- ing. If the acquisition of a new idea is attended by the passage of a wave of molecular motion along a new path, and if recollection is a state of consciousness attending the transmission of a later wave along the same path, we have an adequate physical interpretation of the fact that the repetition of an idea is favourable to the re- collection of it. And we have also the physical interpretation of habit and prejudice. Molecu- lar motions that have been repeatedly trans- mitted between particular groups of nerve cells end by establishing more or less intricate webs 1 Spencer, Principles of Psychology , vol. i. p. 421. [Part II. chapter iii. § 189.] 216 THE EVOLUTION OF MIND of transit lines which cannot be obliterated. No effort can prevent their occasional recurrence along these lines, or establish a new plexus of transit lines, involving the derangement of the old ones. Late in life, when the ratio of repair to waste is greatly diminished, when the nutri- tion of the cerebral tissue is impaired, when the pulling to pieces and putting together of molec- ular clusters in which nutrition consists goes on slowly, then the formation of new sets of tran- sit lines becomes especially difficult ; and hence, as we say, the shaking off of old habits and prejudices, and the acquiring of new and strange ideas, is next to impossible. It is proverbially hard to teach an old*dog new tricks. We may here also see why it is impossible to learn or to carry on complicated thinking when in a state of anaemia : the nutritive changes go on too slowly. Changes in memory further illustrate the theory. In youth, when the excess of repair over waste is at the maximum, but few discharges through any transit fibre are needful in order to work a permanent nutritive change, setting up a line of communication which shall last through life : hence learning is easy and rapid, and memory is powerful. In old age, when waste is slightly in excess of repair, and both are at the mimimum, a great many discharges are necessary for the achievement of any per- manent nutritive change, — hence learning is 217 COSMIC PHILOSOPHY slow and difficult, and memory is feeble. And hence — what is most significant of all — the old man does not remember recent events, while he remembers very well what happened in his youth, when his rate of nutrition was rapid. These and countless similar facts show us that a state of consciousness and a nutritive change in the cephalic ganglia are correlated like the subjective and objective faces of the same thing. And thus are explained the many facts which in the seventh chapter were brought for- ward in illustration of the transformations of vital energy, — such as the facts that conscious- ness ceases the instant the carbonic acid in the blood has attained a certain ratio to the oxy- gen ; that much thinking entails a great excre- tion of alkaline phosphates ; and that prolonged mental exertion is followed by a bodily fatigue and a keen appetite not essentially different from the fatigue and hunger which follow mus- cular exercise. Regarding it now as provisionally established that an association of ideas is dependent upon the formation of a transit line between two nerve cells, and that the more often the fibrous path is traversed the more indissoluble will be the association, let us proceed briefly to apply this doctrine to the explanation of sundry psychical phenomena. Now as we begin to examine the simplest psychical phenomena — those of reflex 218 THE EVOLUTION OF MIND action and instinct — we are met by the seeming difficulty that indissolubly connected psychical states occur where the corresponding objective relation has never been repeated within the ex- perience of the individual. Instinctive adjust- ments of inner to outer relations are apparently made without any help from experience. Moths and butterflies take to wing immediately on emerging from the envelope of the chrysalis ; " a fly-catcher, immediately after its exit from the t^'g^ has been known to peck at and capture an insect ; " and " a young pointer will point at a covey the first time he is taken afield." But in such cases as these, where the cohesion of psychical states has not been determined by the experience of the individual, it has nevertheless been determined by the experience of the race. That the repetition of ancestral experiences must end in the automatic cohesion of psychical states is both demonstrable a priori and illustrated by many facts. Birds living in islands uninhabited by men will not fly away when approached by travellers, having none of that instinctive fear which " continued experience of human enmity has wrought ** in other birds. Yet in a few gen- erations these birds will acquire the same in- stinctive fear. In many cases the offspring of a dog that has been taught to beg will beg instinct- ively ; and various peculiarities of demeanour, carefully impressed by education upon sporting 219 COSMIC PHILOSOPHY dogs, are manifested without education by their descendants. Indeed it is familiar to breeders that the dispositions and instincts of domestic animals can be to a certain extent modified by training and selection, no less than their physical constitutions.^ The physical explanation of the automatic co- hesion of psychical states implied in hereditary instinct is not difficult at this stage of our in- quiry. When the experience of many past gen- erations has uniformly contributed to establish a certain arrangement of transit lines in the chief ganglia of the animal, there must be a hereditary tendency for such transit lines to develop by the mere process of nutrition. And where the psy- chical life is very simple, and but little varied from generation to generation, a nervous system ^ ** How strongly these domestic instincts, habits, and dis- positions are inherited, and how curiously they become min- gled, is well shown when different breeds of dogs are crossed. Thus it is known that a cross with a bulldog has affected for many generations the courage and obstinacy of greyhounds ; and a cross with a greyhound has given to a whole family of shepherd dogs a tendency to hunt hares. These domestic in- stincts, when thus tested by crossing, resemble natural instincts, which in a like manner become curiously blended together, and for a long period exhibit traces of the instincts of either parent : for example, Le Roy describes a dog whose great- grandfather was a wolf, and this dog showed a trace of its wild parentage only in one way, by not coming in a straight Hne to his master, when called. ' * Darwin, Origin of Species y 6th edition, p. 210. 220 THE EVOLUTION OF MIND embodying certain organized aptitudes will be transmitted as surely as the muscular or vascu- lar system is transmitted. Nervous discharges will run along preestablished transit lines as inevitably as in human beings the nervous dis- charges which regulate the respiratory and ali- mentary movements run in permanent channels. The character of the process is best exemplified in reflex action^ the simplest form of psychical life. In reflex action, which is unaccompanied by consciousness, a single inner relation is ad- justed to a single outer relation. For the sim- pler kinds of reflex action nothing is needed but what is called a nervous arc ; that is, an afferent nerve, a ganglion, and an eflferent nerve. , When a person sound asleep draws away a limb that is touched, the impression is simply carried along an afferent nerve" to one of the spinal ganglia, and thence reflected along an efferent nerve to the muscle which moves the limb. The assist- ance of the brain is not needed. In many ani- mals the limbs thus respond to stimuli after the head has been cut off or the brain sliced away. This kind of psychical life, which is but one de- gree removed from purely physical life, is all that is manifested by those lowly organized ani- mals whose nervous systems consist of simple arcs. So thoroughly physical is this group of phenomena that it may seem almost inappro- priate to call it psychical : nevertheless it forms 221 COSMIC PHILOSOPHY the transition from the one kind of life to the other. It is the lowly beginning from which higher forms of psychical activity arise/ Now in reflex action, as it is exemplified alike in the rhythmical movements ofour heart, lungs, stomach, and other viscera, and in the con- traction of a polyp's tentacle when food comes against it, we see a series of nervous discharges which are automatically directed along certain definite transit lines. The lines of least resistance have become permanently organized in the ani- mal structure, and they are transmitted, with the accompanying capacities of action, from genera- tion to generation. Here we see " indissolubly connected psychical states existing where there are perpetually repeated experiences of the ex- ternal relations to which they answer." The phenomena o^ instinct are more distinctly psychical than those of reflex action. " While simple reflex action is common to the internal visceral processes and to the processes of ex- ternal adjustment, instinct is not. There are no instincts displayed by the kidneys, the lungs, the liver : they occur only among the actions of that ^ [While Fiske would probably still maintain his thesis at this point, the modern controversy as to the heredity of acquired characters has rendered these reasonings as to the origin of instinct more doubtful than they were to the evolu- tionists of Fiske' s day. See James, Principles of Psychology, vol. ii. chapter xxviii.] 222 THE EVOLUTION OF MIND nervo-muscular apparatus which is the agent of psychical Hfe." Instinct, moreover, implies the coordination of a large number of stimuli with the answering movements, and herein is its chief difference from reflex action, — a difference in degree only. The newly hatched fly-catcher, in seizing a fly, shows " an exact appreciation of distance, as well as a power of precisely regu- lating the muscular movements in accordance with it." The number of impressions and move- ments here coordinated is so considerable that it would take several pages to describe them thor- oughly. Here certain systems of transit lines, involved in the establishment of a correspond- ence in space, are wrought by nutrition in the animal's nervous system so completely that when the outer relation occurs the discharge instantly takes place along the preestablished channels, and the adjustment is made. There is an intricate compounding of reflex actions, involving the assistance of the brain ; for if the cerebellum be sliced, the fly-catching can no longer be performed. Intricate, however, as the combination is, it is a special and unvarying one which has been continually repeated during the whole lifetime of countless ancestral fly-catchers, so that there is nothing strange in the fact that it is completely organized at birth. The prin- ciple is the same as in the simpler phenomena of reflex action. Here, as before, extending the 223 COSMIC PHILOSOPHY experience theory to the entire race, we see " in- dissolubly connected psychical states existing where there are perpetually repeated experiences of the external relations to which they answer." Though the higher kinds of instinct, in which the supreme ganglia cooperate, are probably ac- companied by a vague consciousness, yet in the main the processes which we have just described must be regarded as automatic. Let us now notice what must occur when the correspondence between inner and outer relations has become quite complex and special. As Mr. Spencer has pointed out, " phenomena become less frequent in proportion as they become more complex ; and hence the experiences of them can never be so numerous as are the experiences of" simple phenomena. The relation between a passing obscuration and a living body recurs oftener than the relation between a certain degree of obscuration and danger, or than the relation be- tween a certain other degree of obscuration and food. Again, each of these relations is more general than the relation between a particular size and form of visual impression and an ob- ject of a particular class. And again, this rela- tion is more general than that between a particu- lar size, form, and colour of visual impression, and a certain species of that class." ^ From this 1 Spencer, Principles of Psychology y vol. i. p. 441. [Part IV. chapter v. § 197.] 224 I THE EVOLUTION OF MIND it follows that a lowly organized animal, in which there is established a correspondence only with the most general environing relations, and which therefore has experience only of such most gen- eral relations, has at the same time a uniform experience which maintains a complete cohesion among its simple psychical states. On the other hand, a highly organized animal, in which there are established correspondences with many com- plex and special relations, will have a varied ex- perience, and at the same time a varying cohe- sion among its complex psychical states. While the most general relations which it experiences will also be the most frequent, and while sun- dry special relations (as in the seizing of its prey by the fly-catcher) will be extremely frequent, there are many other special relations of which the experience will be much less frequent. And accordingly, along with the perfectly coherent psychical states generated by the former, there will be a congeries of less coherent psychical states generated by the latter. Or, to restate the case in physiological language : While in the lower organism there will be a number of tran- sit lines permanently established, and scarcely any tendency toward the formation of new ones ; on the other hand, in the higher organism, there will be a number of permanent transit lines and a number of such lines in process of formation, along with a continual tendency toward the es- VOL. Ill 12^ COSMIC PHILOSOPHY tablishment of new ones. The consequences of this are obvious. In becoming more and more complex, the correspondences become less and less instantaneous and decided. " They gradu- ally lose their distinctly automatic character, and that which we call Instinct merges into some- thing higher." For as long as the psychical life consists solely in the passage of nervous undulations along permanent preestablished channels, there is no consciousness. Consciousness, as already shown, implies continual discrimination, or the contin- ual recognition of likeness and differences — and this process implies a rapid succession of changes in the supreme ganglia. Now this rapid succession of changes occurs when a vast num- ber of relations are brought together in a single ganglion, or group of ganglia, as in the cere- brum, in order to be compared with each other. Besides this, consciousness implies a certain lapse of time during which impressions persist ; and there is no such persistence in reflex action, or in the lower forms of instinct, where the molecular disturbance constituting a nervous impression is instantly drafted off along the preestablished channels. Such persistence oc- curs only when a number of impressions are brought together in a single ganglion, where an appreciable time must elapse before they are carried oflF each along its own set of transit lines. 226 THE EVOLUTION OF MIND For example, when you tickle or pinch the arm of a person asleep, the arm is at first withdrawn by simple reflex action : the ordinary channel, through the afferent nerve to the spinal centre and back again through the efferent nerve to the limb, suffices to carry off all the molecular dis- turbance, — and there is no consciousness of the irritation or of the resulting contraction. But if the pinching be frequently repeated, so that the disturbance is generated faster than it can be thus drafted off, the surplus is sent up through a centripetal fibre from the spinal gan- glion to the brain ; and some dreaming ensues, or perhaps a fretful sound is emitted. If the impression be kept up long enough, there is full consciousness of it, and the person awakes. Now the rise of consciousness impUed in the dream- ing and waking is due to the persistence in the cerebrum of a molecular disturbance which is not at once drafted off through the proper cen- trifugal fibres. Obviously, therefore, when the number of impressions sent in to the brain from moment to moment exceeds the number of thoroughly permeable channels which have been formed there, so that there is a brief period of tension during which occur the nutritive changes implied in the transmission of the disturbance through the appropriate channels, then there arise the phenomena of conscious intelligence. For mark 227 COSMIC PHILOSOPHY what must happen. In thefrst place, the per- sistence of the impressions enables them to be consciously felt, either pleasurably or painfully ; so that there is the germ of Emotion. Secondly, the disturbance tends to propagate itself along various permeable transit lines, so that there is a revived association of ideas, or what we call Memory. Thirdly, there is an integration of the present impressions with such past ones as they resemble, and a differentiation of them from such past ones as they do not resemble ; and this comparison of present with past impres- sions, dependent on memory, implies classifica- tion, and is the germ of what we call Perception and Reasoning. Fourthly, there is, in the case of many kinds of impressions, a period of ten- sion during which it becomes determined along what set of centrifugal fibres the surplus dis- turbance shall be drafted off, and here we have the primitive form of Volition. Thus the vari- ous phases of conscious psychical life — which we call emotion, memory, reason, and volition — arise as soon as there begins to elapse an appreciable time between the accumulation of molecular disturbance in a group of cephalic nerve cells, and its discharge along the proper transit fibres. And this state of things, which is not possible in simple nervous systems which only respond instinctively or by reflex action to a few general relations in the environment, 228 THE EVOLUTION OF MIND becomes possible in those compound nervous systems which respond to a great number of in- frequent and special relations. For the estab- lishment of inner relations, answering to these infrequent and special outer relations, involves a lapse of time during which numerous diverse impressions are getting distributed through va- rious transit lines hitherto little used. When, as in the fully developed human cerebrum, a vast number of infrequent and special relations are continually set up, there is a maximum of nutritive change, there is a maximum of time during which impressions simultaneously com- ing in may be compared and classified, and there is a maximum of consciousness. This explanation of the way in which the va- rious phases of conscious psychical life arise is fully confirmed by the way in which they dis- appear when actions at first consciously per- formed become instinctive. The confirmation is so complete as to afford a very strong proof of the truth of the hypothesis. Many of the actions performed by civilized man are desig- nated by psychologists as " secondarily auto- matic." That is, they are at first performed with the assistance of reason, volition, and conscious memory, and they are attended by feelings of pleasure or pain. But after a while they are per- formed without the aid of reason, volition, or conscious memory, and they are not attended 229 COSMIC PHILOSOPHY by pleasurable or painful feelings. In becom- ing instinctive, they lapse partially or entirely from consciousness. The child in learning to walk and talk must will each movement and rationally coordinate it with other movements in order to attain the desired end. But the man, in walking and talking, is unconscious of the separate movements and volition serves only to set them going. In learning to read, the child must consciously remember each letter, com- bine it with others into a word, and associate the word with the thing signified ; and this last process is repeated in later years when we learn foreign languages. But in reading our own lan- guage, or a foreign one which has been thor- oughly learned, the association of words and things is automatic. In reading an English book, in which French quotations are inserted, one fre- quently passes from one language to the other and back again without noticing the change, if the attention be concentrated on the subject matter. In learning to play the piano, there is at first a vast amount of conscious association between the written notes, the keyboard, and the muscular adjustments of the fingers, wrists, and arms ; but an accomplished pianist will play a familiar piece while his attention is directed to other matters. The case is similar with writing, and indeed with all habitual actions which re- quire nervo-muscular coordination. In many 230 THE EVOLUTION OF MIND cases, moreover, the intervention of conscious attention only impairs the accuracy of adjust- ment. In billiard playing and rifle shooting, the aim is usually impaired if we stop to think about it; and on the piano it is almost impossible to play triple notes with one hand and double notes with the other if we attempt to measure out the time. Purely intellectual acts also become to a cer- tain extent automatic with practice, as was in- deed implied in some of the foregoing illustra- tions. Not only the combination of words into a sentence, but the combination of sentences into a proposition, and the combination of pro- positions into a theory, is effected more and more rapidly, until the process hardly attracts the attention. In a complicated exposition like the present, numerous scientific theorems, at first laboriously comprehended one by one, are wrapped up together and thrown into some subordinate clause of a sentence, the total be- ing so obvious as not to withdraw the attention from the main current of thought while writing. In such facts we have a partial explanation of many of the phenomena of what is called un- conscious or " sub-conscious " thinking. And thus, too, are to be explained those sudden flashes of insight, scientific or poetical, which in early times were attributed to inspiration or dic- tation from without. Obviously without a good 231 COSMIC PHILOSOPHY deal of such automatic acting and thinking, we could achieve but little in art or science. We should never become good pianists if we had to keep paying attention to all the requisite muscular adjustments ; and science would ad- vance but slowly if at each step of an intricate inquiry in dynamics it were necessary to stop and reflect upon the elementary laws of matter and motion. The physical interpretation of these second- ary automatic processes is not diflicult, according to the hypothesis here expounded. During the process of learning, there is an extensive for- mation of new transit lines, and consequently an appreciable interval between the accumulation of molecular disturbance in the cerebral cells and its discharge. Impressions persist long enough to be compared together, and accord- ingly there is reason and there is volition. There is a maximum of consciousness, because there is a maximum duration of the nutritive changes, and hence weariness soon follows — cerebral nutrition entailing greater waste than occurs in any other part of the system. But with constant repetition the resistance to the passage of undulations along the new transit lines disappears entirely. Nutrition has so modified them that, as above explained, they become lines of traction instead of lines of re- sistance. As we say, nothing can prevent the 232 I THE EVOLUTION OF MIND one group of ideas or movements from follow- ing the other. The discharges are made in- stantly, and along with a minimum duration of nutritive change there is a minimum of con- sciousness. The combinations become perma- nently organized in the brain structure, and in becoming permanently organized they become instinctive or automatic. We may now also begin to understand why it is that in man the organization of instincts, primary and secondary, is continued through the early years of life, while in the other animals the majority of the instincts are already organ- ized at birth. The distinction is not an abso- lute one, as many of the higher vertebrates, both birds and mammals, and in a marked de- gree the anthropoid apes, cannot take care of themselves immediately after birth, though they soon become able to do so. The lower we de- scend the animal scale, the more completely organized is the psychical life of the newly born organism. The reason is obviously to be found in the greater speciality and complexity, and the consequent relative infrequency, of the co- ordinations made by the highest animals, and especially by man. When, for example, we put forth the hand to grasp an object, the muscular adjustments are as instinctive as those of the fly-catcher pouncing on an insect ; " volition being concerned merely in setting the process ^3 COSMIC PHILOSOPHY going." But with us, the impressions which we receive and the motions which we make are endlessly varied, and the complex combinations of them occur severally with less frequency than is the case with the simpler combinations formed by lower animals. They are accordingly not coordinated before birth, though they are easily coordinated during childhood.^ A great number of psychical phenomena are thus satisfactorily explained by the hypothesis. But one further service, and a most signal one, is rendered by it ; and this we must briefly in- dicate, in accordance with previous promises, before leaving the subject. The view of cere- bral action here adopted settles the long-vexed question between the Lockian and Kantian schools as to the sources of knowledge ; and the verdict, while partly favourable to each of these schools, is not wholly favourable to either. Let us reconsider the portion of our hypothesis which bears upon this question. It follows from the general principles in- volved in the foregoing exposition, that the peculiar intellectual activity of any parent, by 1 In the concluding chapter of this Part, I shall endeavour to show that this origination and prolongation of the period of infancy, which is the effect of increasing intelligence, is in turn the proximate cause of the genesis of social relations and of ethical feelings, and thus, indirectly, of the entire intellectual and moral supremacy of man. THE EVOLUTION OF MIND modifying the nutrition of his cerebral tissue, must impress itself upon the unstimulated and half- developed brain of his infant offspring. Eliminating the effects wrought in it by count- less environing circumstances, we may say that the infant brain just as surely tends to develop transit lines similar to those in the parental brain as the infant face tends to develop mus- cular peculiarities of expression like those char- acteristic of the parental face. And while the tendency is so slight as to count for little or nothing in the case of the more complex and infrequent associations of ideas, it must be a resistless tendency in the case of those nerve connections which answer to associations in- volved in every act of experience, — as, for ex- ample, those concerned in building up our con- ceptions of space, time, force, and causation. A concise restatement of the case will now lead us at once to our conclusion. While ancestral experience impresses upon the brain a nutri- tive tendency toward the formation of certain special nerve connections, individual experience tends now to assist and now to check the in- herited tendency. And so the number and direction of transit lines in any brain is due to the cooperation of innumerable ancestral and individual experiences. Locke was therefore wrong in calling the infant's mind a blank sheet upon which experience is to write knowledge. 235 COSMIC PHILOSOPHY The mind of the infant cannot be compared to a blank sheet, but rather to a sheet already writ- ten over here and there with invisible ink, which tends to show itself as the chemistry of experi- ence supplies the requisite conditions. Or, drop- ping metaphor, the infant's mind is correlated with the functions of a complex mass of nerve tissue which already has certain definite nutri- tive tendencies. On the other hand, the school of Leibnitz and Kant was wrong in assuming a kind of intuitional knowledge not ultimately due to experience. For the ideas formerly called innate or intuitional are the results of nutritive tendencies in the cerebral tissue, which have been strengthened by the uniform experience of countless generations, until they have become as resistless as the tendency of the dorsal line of the embryo to develop into a vertebral col- umn. The strength of Locke's position lay in the assertion that all knowledge is ultimately derived from experience, — that is, from the intercourse between the organism and the en- vironment. The strength of Kant's position lay in the recognition of the fact that the brain has definite tendencies, even at birth. The Doctrine of Evolution harmonizes these two seemingly opposite views, by showing us that in learning we are merely acquiring latent ca- pacities of reproducing ideas ; and that beneath these capacities lie more or less powerful nu- 236 THE EVOLUTION OF MIND tritive tendencies, which are transmissible from parent to child. I believe that the last difficulties which may have hovered about the doctrine of the Test of Truth, expounded in the third chapter of our Prolegomena, are now swept away. It must be by this time quite clear that the inconceivability test and the experience test are merely the ob- verse faces of the same thing. An association of subject and predicate, which answers to an objective relation of which the experience has been absolutely uniform, must be absolutely indissoluble ; and vice versa. The ultimate question at issue between Mr. Mill and Mr. Spencer thus becomes reduced to a question of terminology, save in one important particular, in which I have already shown that Mr. Mill is not only demonstrably wrong, but also in- consistent with himself. The foregoing exposi- tion adds new weight to the argument by which it was formerly (Part I., chapter iii.) proved that when Mr. Mill asserts that the negation of such an axiom as the indestructibility of matter, which is now inconceivable, was in past times conceiv- able, he virtually asserts that there was a time when men could frame inner relations of which the corresponding outer relations had never been presented in experience. And thus he not only runs counter to the general theory of Life as Adjustment which is here adopted, but he 237 COSMIC PHILOSOPHY contravenes his own favourite doctrine of the experiential origin of all knowledge, which is in reality part and parcel of that general theory of life. With these corollaries I must conclude this too brief account of the process of psychical evolution. In the present chapter and its two predecessors, while steadily refraining from the chimerical attempt to identify Mind with some form of Matter or Motion, it has nevertheless been shown that, owing to the mysterious but unquestionable correlation which exists between the phenomena of Mind and the phenomena of Matter and Motion, it is possible to describe the evolution of the former by the same formula which describes the evolution of the latter. By a continuous differential compounding of im- pressions, we pass, through infinitesimal stages, from the relatively homogeneous and simple set of correspondences known as reflex action, manifested alike by the highest and the lowest animals, to those exceedingly complex and het- erogeneous sets of correspondences known as reason and volition, which are manifested only by the highest animals, and in their greatest complexity by man alone. Throughout this wonderful process we have seen how closely the evolution of psychical function is correlated with the evolution of nerve structure. But great as has been our gain during the foregoing exposi- 238 THE EVOLUTION OF MIND tion, our theory of psychical evolution is as yet by no means complete. Concerning the relations of Mind to Life, and concerning the Composi- tion and Evolution of Mind in general, we have obtained many valuable results. But nothing has as yet been said concerning the especial mode of genesis of those highest manifestations of thought and feeling which distinguish civil- ized man. This problem must be duly treated before our account of psychical evolution can be regarded as complete even in outline. Upon questions of this sort, however, we are not yet prepared to enter. Those highest manifestations of thought and feeling which distinguish civi- lized man from inferior mammals, and in a less- marked degree from uncivilized man, are the products of countless ages of social evolution ; and before we can hope to understand their mode of genesis, we must see what are the teachings of history and psychology concerning the character of social evolution in general. Having shown how, starting from a relatively low degree of sociality, a relatively high degree is attained in conformity to the general theory of Life as Adjustment, we shall be better enabled to comprehend the genesis of that lowest degree of sociality, the attainment of which was the decisive step which first raised Man above the level of the Brutes. The four following chap- ters will therefore be concerned with Sociology ; 239 COSMIC PHILOSOPHY and the first will be devoted to clearing away a complicated misunderstanding, by the help of which metaphysicians have long sought, and still seek, to deter us from applying scientific methods of interpretation to the phenomena of human history. 240 CHAPTER XVII SOCIOLOGY AND FREE-WILL* THAT the phenomena manifested by human beings, as grouped in societies, conform to fixed and ascertainable laws is a proposition which has thus far been taken for granted, inasmuch as it is logically insepa- rable from the other sets of propositions which go to make up our Cosmic Philosophy. Not only, moreover, have we thus tacitly assumed that social phenomena conform to law and may be made the subject of science, but in the fourth chapter of this Synthesis it was expressly stated that the fundamental law to which they con- form is the Law of Evolution, which has now been proved to hold sway among inorganic and organic phenomena, as well as among those superorganic phenomena which we distinguish as psychical. Under ordinary circumstances we might fairly go on and justify our tacit assump- tion and our explicit assertion by showing, both deductively and inductively, that the evolution of society follows in general the same method as the evolution of organic life. In the follow- ^ [See Introduction, § 22.] VOL. Ill 241 COSMIC PHILOSOPHY ing chapter I shall proceed to do this. I shall show, first, that social evolution consists in the integration of human families or tribal commu- nities into larger and larger groups, which be- come ever more heterogeneous and more inter- dependent ; and secondly, that what we call civilization consists in the ever increasing de- finiteness and complexity of the correspondence between the community and the environment. Thirdly, I shall carry on the inquiry to a point somew^hat in advance of Mr. Spencer's expo- sition as it now stands, and show how these truths must be supplemented in order to give us a law of social evolution which shall cover social phenomena simply, excluding the more general phenomena of organic life. But while under ordinary circumstances it might be well enough to proceed directly to such an investigation, since there is no better way of proving that certain groups of pheno- mena conform to law than by pointing out the law to which they conform, nevertheless in the present case I think it desirable to preface the inquiry with a brief discussion of one or two logical and psychological truths — truths of method and of doctrine — which lie at the basis of sociology. In our survey of the simpler sci- ences, no such preface was called for. In be- ginning to treat of biological truths, we did not deem it necessary to prove that waste and re- 242 SOCIOLOGY AND FREE-WILL pair proceed according to immutable laws, or to forestall possible cavils by declaring that, al- though we cannot predict our states of health from week to week, nevertheless organic pheno- mena are not the sport of chance. It is other- wise in sociology, which is a new science, en- cumbered with many popular misconceptions, and regarded with an evil eye by theologians, — persons who profess great devotion to the in- terests of advancing knowledge in general, while the particular advance in knowledge at any time going on somehow never happens to be the one which they think fit to regard with favour. Of each new trophy which Science has from time to time laboriously won, these opponents have hastened to declare, " Behold, it is the last ! '* Though the phenomena presented by the hea- venly bodies, by the surface of the earth, and by the life which covers the earth, have one after an- other, in spite of vehement theological protest, been made the subjects of science,^ it is still stoutly maintained that the results of human volitions can never become amenable to scienti- fic treatment. Here, it is cried, on the thresh- old of sociology we must take our final stand, ^ *' Als Pythagoras seinen beriihmten Lehrsatz entdeckte, opferte er den Gottern eine Hekatombe, d. h. ein Opfer von hundert Stieren. Seitdem briillen alle Ochsen, so oft eine neue Wahrheit entdeckt wird." Buchner, Die Darwin* sche The- oricy p. 288. 243 COSMIC PHILOSOPHY and insist, in the interests of religion and moral- ity, that although all other events may occur in regular sequence, nevertheless in human affairs there is no such sequence. The arguments by which it is sought to establish this desper- ate proposition are based partly on those facts which are assumed to prove the freedom of the will, partly on the endless diversity and com- plexity of human affairs. Concerning this latter class of considerations, I may say here that they are at once irrelevant and inconclusive. Irrel- evant, since even if it were to be granted — which it is not — that the extreme intricacy. of social phenomena may prevent our discerning the order of their sequence, this would prove, not that there is no sequence, but that our vi- sion is limited. Inconclusive, because from the nature of the case, other things being equal, complex phenomena cannot be generalized until the simpler phenomena which they involve have been mentally reduced to orderly succes- sion. As we shall again have occasion to notice, the laws of social life could not be discovered until the sciences of biology and psychology had gone far toward formulating the laws of physical and psychical life in general. But the misconceptions which cluster about this sub- ject are so numerous that they may best be eliminated by a somewhat detailed controversy. Let us examine the argument from complexity, 244 SOCIOLOGY AND FREE-WILL as presented by Mr. Froude ; and afterwards the argument from the assumed lawlessness of volition, as presented by Mr. Goldwin Smith. Mr. Froude begins ^ by dogmatically denying that there is or can be such a thing as a science of history. There is something incongruous, he says, in the very connection of the two words. "It is as if we were to talk of the colour of sound, or the longitude of the rule-of-three." But he carries on the thought in a way that shows plainly his reluctance to grapple fairly with the problem. In his next sentence he says, " where it is so difficult to make out the truth on the commonest disputed facts in mat- ters passing under our very eyes, how can we talk of a science in things long past, which come to us only through books ? " Now to rea- son like this is merely to shrink from the en- counter. For the question is, not whether the science is difficult, but whether it is possible. Mr. Froude sets out to show that there can be no such science, and his first bit of proof is that, if there is such a science, it must be far more difficult than any other ; a position which we may contentedly grant. Let us follow him a step farther. "It often seems to me as if his- tory were like a child's box of letters, with which we can spell any word we please. We have only to pick out such letters as we want, arrange 1 Short Studies on Great Subjects, vol. i. 245 COSMIC PHILOSOPHY them as we like, and say nothing about those which do not suit our purpose." And what does all this amount to ? Is this Mr. Froude's idea of historical investigation ? Why, the same thing may be done in any science. We have only to pick out all the facts on one side, and blink all the facts on the other side, to prove the veracity of every oracle, soothsayer, and clairvoyant that ever existed, the validity of every paltry omen, the credibility of every crazy notion of alchemy or judicial astrology. In this way we may prove that the homoeopathist always saves his patient, while the allopathist always kills him ; or vice versa. And it was in this way that the phrenologists erected their pseudo- science. By following this method, also, it be- comes easy to prove that Henry VIII. was an exemplary husband. It is in this way that every incorrect or inadequate hypothesis in physical science or in history has arisen, and gained temporary recognition. Supposing Ty- cho Brahe had said to his Copernican antago- nists, " Astronomy is like a child's box of let- ters ; if we take out what we want and let the rest go, we can spell whatever we please ; I spell out the Ptolemaic hypothesis, and will there- fore abide by it ; " he would have been talking much after the manner of Mr. Froude. It is true, as Mr. Froude further says, that one phi- losopher believes in progress, a second in retro- 246 SOCIOLOGY AND FREE-WILL gresslon, and a third, like Vico, in ever-recur- ring cycles. But is this because the facts are undecipherable, or because the investigation is one-sided ? Because Agassiz still believes or- ganic species to be fixed, while almost all other naturalists believe them to be variable in char- acter, are we to infer that there is no science of biology ? In such unworthy plight does Mr. Froude retreat before the problem he has en- countered. He starts to show us that a science of history is as ridiculous an impossibility as a scarlet B-flat or a westerly proportion ; and he ends by mildly observing that history is a diffi- cult subject, in which a series of partial exam- inations may bring forth contradictory conclu- sions ! The next bit of inference concerns us more intimately. " Will a time ever be when the lost secret of the foundation of Rome can be recov- ered by historic laws ? If not, where is our sci- ence ? " Just where it was before. The science of history has nothing to do with dates, except to take them, so far as they can be determined, from the hands of historical criticism. They are its data, not its conclusions. As Mr. Mor- ley reminds us, we do not dispute the possibil- ity of a science of meteorology because such a science cannot tell us whether it was a dry or a wet day at Jericho two thousand years ago. Facts like these show us that sciences dealing 247 COSMIC PHILOSOPHY with phenomena which are the products of many and complex factors cannot hope to attain that minute precision which is attained by sciences deahngwith phenomena which are the products of few and simple factors. They show that so- ciology cannot, like astronomy, be brought un- der the control of mathematical deduction. But it was not necessary for Mr. Froude to write an essay to prove this. But, continues Mr. Froude, " can you ima- gine a science which would have foretold such movements as '* Mohammedanism, or Chris- tianity, or Buddhism ? To the question as thus presented, we must answer, certainly not. Nei- ther can any man foretell any such movement as the typhoid fever which six months hence is to strike him down. If the latter case does not prove that there are no physiologic laws, neither does the former prove that there are no laws of history. In both instances, the antecedents of the phenomenon are irresistibly working out their results ; though in both cases they are so complicated that no human skill can accurately anticipate their course. But to a different pre- sentment of Mr. Froude's question, we might return a different answer. There is a sense in which movements like Mohammedanism, or Buddhism, or Christianity, could not have been predicted, and there is a sense in w^hich they could have been. What could not have been 248 SOCIOLOGY AND FREE-WILL predicted was the peculiar character impressed upon these movements by the gigantic person- alities of such men as Mohammed and Omar, Sakyamuni, Jesus, and Paul. What could have been predicted was the general character and direction of the movements. For example, as I shall show in the following chapter, Christianity as a universal religion was not possible until Rome had united in a single commonwealth the progressive nations of the world. And when Rome had accomplished this task, it might well have been predicted that before long a religion would arise which should substitute monothe- ism for polytheism, proclaiming the universal fatherhood of God, and the universal brother- hood of men. I admit that such a prediction could have been made only by a person familiar with scientific modes of thought not then in existence ; but could such a person have been present to contemplate the phenomena, he might have foreseen such a revolution in its main fea- tures, as being an inevitable result of the inter- action of Jewish, Hellenic, and Roman ideas. I am inclined to think he might have foreseen that it would arise in Palestine, that its spread would be confined to the area covered by Ro- man civilization, and that its work would for a long time be most thorough in the most thor- oughly Romanized regions. We do not need, however, to insist upon this 249 COSMIC PHILOSOPHY point. For in none of the concrete sciences is there anything like thorough and systematic prevision, save in astronomy ; and even in as- tronomy our foresight becomes precarious as soon as we pass beyond the solar system, and begin to inquire into the results of the mutual gravitation of the innumerable stellar bodies. We know that our sun is rushing, with immense velocity, toward the constellation Hercules ; but we cannot yet trace his orbit, as Kepler traced the orbit of Mars. When we come to biology and psychology, the power of accurate prevision is very small ; yet no one denies that the phe- nomena of life and intelligence conform to fixed and ascertainable laws. In sociology we must expect still less ability to predict. The truth is, as Comte acutely pointed out, that while in the simpler sciences our object is gained if we can foretell the course of phenomena so as to be able to regulate our actions by it, in the more complex sciences our object is gained when we have generalized the conditions under which phenomena occur so as to be able to make our volitions count for something in modifying them. We cannot modify astronomic pheno- mena, but we can predict them. We cannot pre- dict, save to a limited extent, biologic pheno- mena ; but knowing more and more thoroughly the conditions under which they occur, we can more and more skilfully modify them so as to 250 SOCIOLOGY AND FREE-WILL ensure health or overcome disease. And obvi- ously even this limited ability to modify the phenomena implies a certain amount of previ- sion, quite enough to justify us in asserting that the phenomena conform to law. The case is similar in sociology. Though we may not be able definitely to predict a given political revo- lution, we may nevertheless understand the gen- eral movement of affairs and the effects which certain kinds of legislation are likely to produce, so as to hasten a desired result or avert social mischief. Upon this possibility are based all our methods of government and of education. And, as in biology, this ability to modify the phenomena proves that the phenomena occur in some fixed order of sequence. For if there were phenomena without any definite order of sequence, we could neither predict nor modify them ; and where there is a definite order of sequence, there is, or may be, a science. Now in denying that there is or can be a science of history, Mr. Froude, if he means any- thing, means that social affairs have no fixed order of sequence, but are the sport of chance. Either Law or Chance — these are the only al- ternatives, unless we were to have recourse, like the Mussulman, to Destiny, an illegitimate third idea, made up of the other two misconceived and mutilated in order to fit together. But for the modern thinker there is no middle course. 251 COSMIC PHILOSOPHY It is either symmetry or confusion, law or chance, and between the two antagonist conceptions there can be no compromise. If the law of cau- sation is universal, we must accept the theory of law. If it has ever, in any one instance, been violated, we may be excused for taking up with the theory of chance. Now we know that all the vast bodies in this sidereal universe move on for untold ages in their orbits, in strict con- formity to law. In conformity to law, the solar system in all its complexity has grown out of a homogeneous nebula ; and the crust of the cooling earth has condensed into a rigid surface fit for the maintenance of organic life. Out of plastic materials furnished by this surface and the air and moisture by which it is enveloped, organic life has arisen and been multiplied in countless differing forms, all in accordance with law. Of this aggregate of organic existence, man, the most complex and perfect type, lives and moves and has his being in strict conformity to law. His periods of activity and repose are limited by planetary rotations. His achieve- ments, physical and mental, are determined by the rate of his nutrition, and by the molecular structure and relative weight of the nervous matter contained in him. His very thoughts must chase each other along definite paths and contiguous channels marked out by the laws of association. Throughout these various phe- 252 SOCIOLOGY AND FREE-WILL nomena, already generalized for us by astrono- mers, geologists, biologists and psychologists, we know that neither at any time nor in any place is law interfered with, — that yesterday, to-day and forever, the effect follows the cause with inevitable and inexorable certainty. And yet we are asked to believe that in one particular corner of the universe, upon the surface of one little planet, in a portion of the organism of one particular creature, there is one special pheno- menon called voHtion, in which the law of cau- sation ceases to operate, and everything goes helter-skelter ! Such is the demand which Mr. Froude makes upon our powers of acquiescence, and such is the theory which Mr. Goldwin Smith, in the interests of theology, pronounces it unphiloso- phical, if not impious, for us to reject. Of the Science of History, Mm Smith asserts that " it extinguishes all sympathy ; " it " must put an end to self-exertion ; " it " would dissolve the human family ; " it makes man the most help- less of animals, no better in fact than " a beast or a blade of grass ; " it degrades humanity to mere clay ; it establishes " a strange contradic- tion between our outward observation and our inward consciousness ; " it makes us " render up our personality," and become "a mere link in a chain of causation, a mere grain in a mass of being ; " it builds up, " with much exultation," 253 COSMIC PHILOSOPHY an "adamantine barrier of law " — whatever that may be — between man and the source of all goodness ; and, to crown all it tells us that "conscience is an illusion," and prevents our having any " rule of right action." ^ Hard words are as powerless to overthrow as to establish a philosophical theory. In scientific inquiry the ability to weigh evidence goes for much, but facility in declamation goes for little. And to any one who has been brought up amid scientific pursuits, there is but little that is in- structive or edifying in the fervid rhetoric of a writer who, in attacking a disagreeable doctrine, prefers to stigmatize it as disagreeable, rather ^ Lectures on the Study of History^ pp. 63, 67, 48, 82, 85* 87* 59' P^^ abler men than Mr. Smith or Mr. Froude have in like manner allowed their feelings to run away with them w^hen treating of this question. ** Not the picture of a man ; but the representation of an automaton that is what it cannot help being ; a phantom dreaming what it cannot but dream ; an engine performing what it must perform ; an incar- nate reverie ; a weathercock shifting helplessly in the winds of sensibility ; a wretched association-machine, through which ideas pass linked together by laws over which the machine has no control ; anything, in short, except that free and self-sus- tained centre of un derived, and therefore responsible activ- ity, which we call Man ; " — such, says Professor Ferrier, is ** the false representation of man which philosophy invariably and inevitably pictures forth whenever she makes common cause with the natural sciences." Lectures and Philosophical Remains y vol. ii. p. 195. Verily the free-will questicn is a great opener of the flood-gates of rhetoric! 254 SOCIOLOGY AND FREE-WILL than to show that the evidence is against it. Nevertheless beneath the emotional assertions just quoted there lies a complicated theoretical misconception, the character of which it is worth our while to examine. The well-worn argument is that unless the human will were " free," there could be no responsibility, and therefore no mo- rality ; that if volitions are caused, even though it be by our own desires, we are all in a condi- tion similar to that of the man who has made a promise under duress, to whom neither praise nor blame can justly be attached for the manner in which his promise is kept. It is popularly supposed that there is some- thing very forcible in this argument ; and that, when coupled with the opposing arguments drawn from such sequences as are easily trace- able among human affairs, the result is a puz- zle which must forever remain insoluble. The problem of free-will has been described by poets, and is customarily regarded, as the most difficult problem which can occupy human attention ; and we frequently hear it said that it can never be completely solved. But in reality all this per- plexity is the result of the desperate muddle into which metaphysics has brought the subject. Strip the question of the peculiar metaphysical jargon in which it is usually propounded, restate it in precise scientific language, and it becomes a very easy question to answer. Would that COSMIC PHILOSOPHY science presented none more difficult ! Con- fused and inaccurate verbiage is responsible for the chronic disputation upon this subject. Nowhere else is Berkeley's complaint so thor- oughly applicable, that in deahng with meta- physics men first kick up a dust and then wonder why they cannot see through it. Those who have come to regard the question from a purely scientific point of view also regard it as thor- oughly settled; and the need for refuting such arguments as the one above cited, they class among the needs, too often thrust upon us, of refuting fallacies already thrice exploded. In illustration of this, let us notice the theory which the free-will argument implies concerning the nature of volition. The theory implies that over and above par- ticular acts of volition, there is a certain entity called " The Will," which is itself a sort of per- sonage within the human personality. This en- tity, called " The Will," is supposed to have desires and intentions of its own, which the causationists are supposed to declare constantly liable to be frustrated by external agencies. In opposition to this imaginary heresy, it is as- serted that this autocratic Will is " free," and, sitting in judgment over " motives," may set aside the stronger in favour of a weaker, or may issue a decree in defiance of all motives alike. Some such crude conception as this is implicitly 256 SOCIOLOGY AND FREE-WILL conveyed by every statement which, alluding to the Will as an entity, ascribes " freedom " to it. Only by means of such a conception can the phrase " freedom of the Will " be shielded from the imputation of nonsense. Only thus can the argument above cited be regarded as relevant to the subject in dispute. For if Will be not con- ceived as an entity acting under conditions, then no comparison can be made between caused vo- lition and constrained behaviour. If instead of "The Will" we look at the act of willing, — which is not an entity, but a dynamic process, — then it becomes absurd to talk of this act as being either free or not free, and we must seek for some other word than " freedom " by which to designate its alleged want of causal connection with preceding psychical states. Now the tendency to erect relations and pro- cesses into entities is a tendency which modern metaphysics has inherited from a mischievous mode of thought current in ancient times and rather loosely known as " Realism." Among metaphysicians, unused to the habits of thought which science nurtures, the tendency is an almost irresistible one. Civilization, for example, is ob- viously a process^ but Dr. Whately continually speaks of it as if it were a thing which could be handed about from one nation to another, or hidden away for a time in some dark corner. And upon this amusing misconception he builds a VOL. Ill ^57 COSMIC PHILOSOPHY wonderful theory, which, however, it is not worth while for any busy man to stop and refute. It is in a similar way, and owing to the same re- alistic tendency, that there has arisen the con- ception of such an entity as "The Will," the existence of which modern psychology does not recognize any more than it recognizes the lapidity of stones or the ubication of points in space. Modern psychology is concerned only with the process of will, or volition. As Dr. Maudsley observes, " it is not man's function in life to think and feel only : his inner life he must express or utter in action of some kind — in word or deed. Receiving impressions from nature, of which he is a part, he reacts upon nature intelligently, modifying it in a variety of ways. ... As the spinal cord reacts to its impressions in excito-motor action, and as the sensory centres react to their impressions in sensori-motor action, so, after the complex in- terworking and combination of ideas in the hemispherical ganglia, there is in like manner a reaction or desire of determination of energy outwards, in accordance with the fundamental property of organic structure to seek what is beneficial and to shun what is hurtful to it. It is this property of tissue that gives the impulse which, when guided by intelligence, we call vo- lition ; and it is the abstraction from the parti- cular volitions which metaphysician? personify as 258 SOCIOLOGY AND FREE-WILL the Will. . . . Physiologically we cannot choose but reject the Will : volition we know, and will we know, but the Will, apart from particular acts of volition or will, we cannot know. To interpose such a metaphysical entity between reflection and action thereupon would bring us logically to the necessity of interposing a similar entity between the stimulus to the spinal cord and its reaction. Thus instead of unravelling the complex by help of the more simple, we should obscure the simple by speculations concerning the complex." ^ As scientific inquirers, " we have to deal with volition as a function of the supreme centres, following reflection, varying in quan- tity and quality as its cause varies, strengthened by education and exercise, enfeebled by disease, decaying with decay of structure, and always needing for its outward expression the educated agency of the subordinate motor centres. We have to deal with will, not as a single undecom- posable faculty unaffected by bodily conditions, but as a result of organic changes in the supreme centres, afi^ected as certainly and seriously by- disorder of them as our motor faculties are by disorder of their centres. Loss of power of will is one of the earliest and most characteristic symptoms of mental derangement ; and what- ever may have been thought in times past, we know well now that the loss is not the work of ^ Body and Mind, pp. 22, 23. COSMIC PHILOSOPHY some unclean spirit that has laid its hands upon the Will, but the direct effect of physical dis- ease. Volition is, accordingly, that transformation of feeling into action which is attended by a conscious comparison of impressions, and which involves nutritive changes in the cerebrum or cerebellum, or in both. As we saw in the pre- ceding chapter, the sequence of actions upon impressions is either reflex or instinctive, and in either case automatic, so long as the nervous energy liberated by the impression is instantly discharged through a completely permeable channel or set of channels. But in those higher organisms in which an immensely varied ex- perience has established innumerable complex systems of less permeable channels, there inter- venes between the liberation of energy in the brain and its discharge upon the motor centres a period during which there is a tension between various nerve currents, each seeking to discharge itself along the most permeable lines of transit. We saw also that this period of tension is a period of conscious deliberation, involving con- scious reflection, and feelings of desire or aver- sion. And these views turned out to be justified by the fact that as soon as the frequent repeti- tion of any given set of experiences has rendered all the transit lines involved in the case com- pletely permeable, so that there is no longer any 260 SOCIOLOGY AND FREE-WILL appreciable period of tension, then the acts once conscious and voluntary become involuntary and automatic. Now the state of consciousness called Desire is accompanied by a nascent excitement of the nerve fibres distributed upon the muscular ap- paratus whose activity is requisite for the attain- ment of the desired object. There is a tendency to go through with the movements needful for realizing the desire ; and this tendency, unless neutralized by an antagonist tendency, must end in action. In the language of dynamics, tension, when not counteracted by opposing tension, must pass into vis viva. This passage of nervous tension into nervous vis viva con- stitutes volition, which may for practical pur- poses be regarded indifferently as the final stage of emotion or as the initial stage of action. Passing from the case in which a single de- sire is operative, let us briefly consider the spe- cial case of two conflicting desires, where the gratification of the one is incompatible with that of the other. In this case, two groups of motor nerves are nascently excited. Here there are two opposite tensions, and the resulting action will depend on their comparative strength. l{ they exactly neutralize each other, as in the hy- pothetical case of the ass between the two bun- dles of hay, no volition will ensue. But in a complex aggregate, like the human or animal 261 COSMIC PHILOSOPHY organism, such a state of equilibrium cannot be of long continuance. Sooner or later — either from the greater vividness with which one of the desired objects is mentally realized, or from any one of a thousand other disturbing circum- stances down to those of a purely physical na- ture, — one desire will become stronger than the other. And instantly thereupon, the surplus nervous tension remaining after the weaker de- sire is neutralized wall pass into nervous vis viva; or, in other words, volition will take place. The opposing tension need not, however, have desire for its concomitant. It may be fur- nished by the mere inertia of the nervo-mus- cular system ; as when a man, wishing to do something which requires exertion, is too weary to do it. Weariness implies a diminution in the total amount of contractile force — a state in which a tension greater than ordinary is obvi- ously required for the initiation of muscular motion. Conversely, the originating tension need not always be supplied by desire, but may be consequent upon vivacity, which is the pre- sence of a superfluous amount of vital energy; as exemplified alike in the morning frolics of an infant, in the singing of birds, and in the gam- bols of a dog when released from his kennel. Cases as simple as those here treated occur no doubt with comparative infrequency. Usu- ally a great number of motives, indefinitely 262 SOCIOLOGY AND FREE-WILL complex and variable in their mutual combina- tions and oppositions, are simultaneously oper- ative. But however numerous or complicated the forces at work, from whatever source the motives to action or inaction arise, whatever be the nature of the incentives to one kind of con- duct or to some other kind, it is equally true that the result depends upon their comparative strength. Indeed since forces can be measured only by their effects, to say that of two conflict- ing motives one is followed by volition, is to call that motive the stronger one. " Our only evidence of excess of force is the movement it produces ; " and when the ancient engineer wished to ascertain the comparative power of a couple of catapults, he had no alternative but to see which would hurl its stone to the greater distance. To say explicitly that volition does not follow the strongest motive, is to say im- plicitly that motion does not always follow the line of least resistance ; which is to deny the persistence of force. Volition being accordingly regarded as the process whereby feeling initiates action, it be- comes evident that the term " free " is no more applicable to it than the term " copper col- oured." As Mr. Bain observes, " The designa- tion ' liberty of choice ' has no real meaning, except as denying extraneous interference. If I am interfered with by another person compel- 263 COSMIC PHILOSOPHY ling me to act in one way, then it may be said, intelligibly enough, that I have not liberty of choice. But as between the different motives of my own mind, there is no meaning in the use of the word ' liberty.' Various motives — pre- sent or prospective pleasures and pains — con- cur in urging me to act. The result of the con- flict shows that lone group is stronger than another, and that is the whole case." ^ Or, as M. Littre has still more forcibly reminded us, the term " liberty," as applied to voYitioUy means the power of obeying the strongest motive. When that power is interfered with, by paraly- sis or insanity, or the constraint exercised by other persons, then we may truly say that we are deprived of free-will and of responsibility. But so long* as circumstances allow volition to follow the strongest motive, then we truly say that we are free and responsible for our actions. Thus the tables are completely turned, and much of the current disputation on this subject is reduced at once to unmeaning verbiage. The popular arguments in favour of " freedom " are seen to be as palpable cases of ignoratio elenchi as are those daily urged against the develop- ment hypothesis. By a scientific definition of Will, the assertion of freedom is set aside as irrelevant, leaving behind the assertion of non- causation. That this too is virtually disposed ^ Bain, The Emotions and the Will, ist edition, p. 550. 264 SOCIOLOGY AND FREE-WILL of by the same definition scarcely needs point- ing out. Yet for the sake of still greater clear- ness, our present results may fitly be supple- mented by a new class of considerations. That volitions differ from all other pheno- mena by their capability of occurring without any cause is the opinion of the free-will phi- losophers; and Mr. Smith, in criticising the con- trary opinion, remarks that "if comets formed their own future" (/'. e. were endowed with volition), " they would be rather embarrassing subjects of science." Without attempting to decipher the vagaries in which these cosmical bodies might in such case take it upon them- selves to indulge,^ it will be enough for my present purpose to point out some of the shoals on which the free-will doctrine must land its de- fenders. If volitions arise without cause, it ne- cessarily follows that we cannot infer from them the character of the antecedent states of feeling. If, therefore, a murder has been committed, we have a priori no better reason for suspecting the worst enemy than the best friend of the 1 In point of fact a comet does '* form its own future ** in the same way that a man does. The state of a heavenly body at any given moment is a product, partly of the forces, molar and molecular, with which it was endowed at the preceding moment, and partly of the forces simultaneously exerted upon it by environing heavenly bodies. The case of human volition differs from this in nothing save the number and complexity, and consequent relative incalculableness, of the forces at work. 0.6^ COSMIC PHILOSOPHY murdered man. If we see a man jump from a fourth-story window, we must beware of too hastily inferring his insanity, since he may be merely exercising his free-will ; the intense love of life implanted in the human breast being, as it seems, unconnected with attempts at suicide or at self-preservation. We can thus frame no theory of human actions whatever. The count- less empirical maxims of every-day life, the em- bodiment as they are of the inherited and or- ganized sagacity of many generations, become wholly incompetent to guide us ; and nothing which any one may do ought ever to occasion surprise. The mother may strangle her first- born child, the miser may cast his long trea- sured gold into the sea, the sculptor may break in pieces his lately finished statue, in the pre- sence of no other feelings than those which be- fore led them to cherish, to hoard, and to create. To state these conclusions is to refute their premise. Probably no defender of the doctrine of free-will could be induced to accept them, even to save the theorem with which they are inseparably wrapped up. Yet the dilemma can- not be avoided. Volitions are either caused, or they are not. If they are not caused, an inex- orable logic brings us to the absurdities just mentioned. If they are caused, the free-will doctrine is annihilated. No help is afforded by the gratuitous hypothesis that there is a connec- 0.66 SOCIOLOGY AND FREE-WILL tlon between the act and the motive, which yet is not a causal connection. Such connection, if it exist, must be a case either of conditional in- variable sequence, or of unconditional invaria- ble sequence. On the first supposition, we have a case like the succession of day and night, in which both terms of the sequence are condi- tioned upon a third fact ; so that here we do not escape causation. The second supposition is but an assertion of causation in other words. While to take refuge in the postulate that this assumed connection is a case of variable se- quence is to affirm and deny connection in the same breath. But it is said that consciousness declares the Will to be free ; and therefore that any attempt to disprove its freedom by reasoning is suicidal, since all such reasoning must end by impugn- ing the veracity of that consciousness on which its own data are ultimately based. An ingenious argument truly, the conclusion whereof would be more readily admitted if its premise were true. Consciousness, which is so confidently appealed to as establishing by its infallible ver- dict the doctrine of free-will, in fact says no- thing about the matter. That volitions are un- caused is a proposition altogether too indirect for consciousness to sit in judgment upon, and it can neither be proved nor disproved by sim- ple introspection. It would have been equally 267 COSMIC PHILOSOPHY appropriate for the mediaeval astronomer to ap- peal to consciousness as testifying to the revo- lution of the sun about the earth. As Mr. Bain observes, " it is a great stretch of asseveration to call the construction of an enormous theory an act of consciousness so simple that we cannot make a slip in performing it." ^ Consciousness tells us only that we will. By observation and experience — not by the simple and direct in- terrogation of consciousness — we know that, circumstances permitting, our volitions may be accomplished. With the exception, therefore, of those theological fatalists who assert that hu- man actions are determined by an external con- straining power, it is the universal opinion that men can voluntarily determine their own actions; and this is just what the much-abused testimony of consciousness amounts to. This is all that it means to any one not mystified by metaphysics ; the non-causation of volitions being a theorem so far from obvious to a great many men, that it requires considerable explanation to make them understand it. By the testimony of con- sciousness, as thus interpreted, the assertors of the lawlessness of volition are not helped in the least. The question at issue between them and their opponents is, not whether the actions of men are normally free, but whether their free- dom is consistent with their being caused. The 1 The Emotions and the Wil/y ist edition, p. 563. 268 SOCIOLOGY AND FREE-WILL assertors of " Free-Will " maintain that causa- tion is inconsistent with liberty." ^ The so- called necessarians assert that liberty and causa- tion are quite consistent with each other. To which we must now add, that it is not causation, but the absence thereof, which is as incompati- ble with liberty as it is with law. For the causationist, believing that volition invariably follows the stronger motive, endeav- ours to increase the relative strength of all those emotions whose outcome is virtuous and up- right conduct, while he strives to weaken those feelings whose tendency is toward base and ig- noble conduct. Knowing that by continual in- dulgence desire is reinforced, while by constant 1 ** The law of bondage throughout the universe is the law of cause and effect. In the violation, then, of this law, true freedom must consist." Ferrier, Lectures and Philosophical Remains f vol. ii. p. 255. One might expect such a remark as this from Mr. Goldwin Smith, who speaks of being ** bound by the chain of certain causation ; ' ' but from so acute a thinker as Professor Ferrier, it is surprising. To adopt, in a somewhat altered sense, Kant's happy illustration, — the spec- tacle of a bird denouncing as an encumbrance the air by which alone it is enabled to fly would be a fitting parallel to the spectacle of those philosophers who decry that regularity of sequence through which alone has ** freedom " any meaning. As Lessing long ago said, with well-bestowed contempt, ** Le beau privilege d'etre soumis a une puissance aveugle qui ne suit aucune regie ! En serait-je moins le jouet du hasard parce que ce hasard residerait en mot ? ' ' 269 COSMIC PHILOSOPHY repression it is enfeebled, he applies this know- ledge to the control of his will and the discipline of his character. But on the theory that voli- tions are causeless, all methods of self-discipline become of no avail. If they are powerless to influence action, it is of small practical impor- tance whether noble and sympathetic or base and selfish motives are prevalent ; and the moral distinction between them loses most of its signi- ficance. Why, asks Mr. Smith, " is a Philip II. more the subject of moral disapprobation than the plague? '* Why, indeed, unless his atrocious crimes are to be interpreted as the necessary outgrowth of a character wherein good motives were impotent and bad motives all-powerful. Were volition self-determining, then similar acts might have been committed by a Washington or a Borromeo. Obviously there would be little use in laboriously schooling our desires to virtue, if at any moment in spite thereof some uncaused volition might bring forth from us a detestable deed. It is therefore not the doctrine of causa- tion, but the so-called free-will doctrine, that, if true, would " put an end to self-exertion," and deprive us of every " rule of right action." Since self-control, and therefore liberty, Is im- possible unless volition is determined by desire, it is the latter doctrine — not the former — which is really inconsistent with the assertion of human freedom, which takes from us the 270 SOCIOLOGY AND FREE-WILL dignity of responsibility, and makes man the sport of a grotesque and purposeless chance. In truth, the immediate corollaries of the free-will doctrine are so shocking, not only to philosophy but to common-sense, that were not accurate thinking a somewhat rare phenomenon it would be inexplicable how any credit should ever have been given to such a dogma. This is but one of the many instances in which, by the force of words alone, men have been held subject to chronic delusion. The libertarian doctrine has obtained currency because it has talked loudly of human freedom, with which, nevertheless, a brief analysis proves it to be incompatible. Substitute for the unmeaning phrase " freedom of the Will " the accurate phrase " lawlessness of volition," and the theory already looks less plausible. In place of the vague and ambiguous word " necessity," write the clear and definitely connotative word "causa- tion," and the scientific theory at once loses its imaginary terrors. The titles with which the free-will doctrine decorates itself, and those with which it brands its opponent, are alike " ques- tion-begging epithets." They serve to prejudge the point at issue. Not content with the overwhelming prestige which its name thus gives it, the free-will doc- trine seeks to follow up its advantage by iden- tifying its antagonist with Asiatic fatalism ; a 271 COSMIC PHILOSOPHY confusion of ideas like that under which Mr. Bounderby laboured, when unable to see the difference between giving workmen their just dues, and feeding them with turtle-soup out of a gold-lined spoon. To say that actions depend- ent on volition will take place whenever the essential conditions are present, and to say that they will take place even if the conditions are absent, are by free-will theorists held to be one and the same assertion ! ^ Fatalism is, however, much more closely akin to their own doctrine. Each ignores causation ; each is incompatible with personal freedom ; the only difference be- tween them being that the one sets up Chance, while the other sets up Destiny, as the arbi- ter of human affairs. And while each doctrine is theoretically held by large bodies of men, each in practice is habitually contradicted by its upholders. The defenders of free-will, who in practice are obliged to admit a certain con- nection between acts and motives, and the ^ *' It is owing to the very general misconception of the nature of Law that there arises the misconception of Necessity; the fact that events arrive irresistibly whenever their condi- tions are present is confounded with the conception that the events must arrive whether the conditions be present or not, being fatally predetermined. Necessity simply says that what- ever is is, and will vary with varying conditions. Fatalism says that something must be ; and this something cannot be modified by any modification of the conditions." Lewes, Problems of Life and Mi?id, vol. i. p. 309. 272 SOCIOLOGY AND FREE-WILL Arab fatalists, among whom the saying is current that " when Allah wills an event, he prepares the causes beforehand," alike exemplify this. Though both agree in repudiating causation, both equally in their every-day maxims give evidence of an unconscious belief in its exist- ence. Having identified the causation theory with fatalism, it becomes all the easier for its oppo- nents to accuse it of denying moral responsibil- ity. Accordingly, when Mr. Buckle, following in the footsteps of Laplace, inferred from the regularity of the statistics of crime and suicide, marriages and dead-letters, that voluntary ac- tions conform to law ; ^ it was proposed by one of his reviewers that state governments should at once suspend judicial operations, and having ascertained from statistics the yearly number of murders, should forthwith hang a correspond- ing number of individuals, selected by lot from the community. To which suggestion the nat- ural reply would have been, that if govern- ments ever do adopt this singular course of ad- ministering justice, they will then be consistently acting on the belief that motives do not stand in a causal relation to volitions. If the volition can follow the weaker motive, the feelings which ordinarily deter from the commission of crime ^ Buckle, Civilization in England, vol. i. pp. 20—30 ; Laplace, Essai sur les ProbabiliteSy p. 76. VOL. Ill -^73 COSMIC PHILOSOPHY need not be strengthened by the fear of pun- ishment.^ Thus do all the favourite arguments in be- half of the free-will hypothesis recoil upon its defenders. To adopt from barbarian warfare an ungraceful but expressive simile, they are like awkwardly thrown boomerangs which wound the thrower. Attempting, as the free-will philo- sophers do, to destroy the science of history, they are compelled by an inexorable logic to pull down with it the cardinal principles of ethics, politics, and jurisprudence. Political economy, if rigidly dealt with on their theory, would fare little better ; and psychology would become chaotic jargon. That psychical actions, ^ '* The very reason for giving notice that we intend to pun- ish certain acts; and for inflicting punishment if the acts be committed, is that we trust in the efficacy of the threat and the punishment as deterring motives. If the volition of agents be not influenced by motives, the whole machinery of law be- comes unavailing, and punishment a purposeless infliction of pain. In fact it is on that very ground that the madman is exempted from punishment ; his volition being presumed to be not capable of being acted upon by the deterring motive of legal sanction. TYv^free agent, thus understood, is one who can neither feel himself accountable, nor be rendered account- able to or by others. It is only the necessary agent (the per- son whose volitions are determined by motives, and, in case of conflict, by the strongest desire or the strongest apprehen- sion) that can be held really accountable, or can feel himself to be so." Grote, Review of Mill' s Examination of Hamil- ton's Philosophy, p. 97. 274 SOCIOLOGY AND FREE-WILL and volitions among them, conform to law is the indispensable axiom of every science or philosophy which treats of the mind and its products, whether individually or socially em- bodied. He who asserts the contrary maintains " a form of the Manichaean doctrine of two principles ... in which one principle, that of order, presides over the physical phenomena of the universe, and the other, that of disorder, over its moral phenomena." ^ As I have already said, no middle ground can be talcen. The denial of causation is the affirmation of chance, and "between the theory of Chance and the theory of Law, there can be no compromise, no reciprocity, no borrowing and lending." To write history on any method furnished by the free-will doctrine would be utterly impossible. Mr. Smith tells us that " finding at Rome a law to encourage tyrannicide, we are certain that there had been tyrants at Rome, though there is nothing approaching to historical evi- dence of the tyranny of Tarquin." By drawing this inference he abandons his own principles, according to which the law in question might have originated without any cause except the self-determining will of some Roman legislator. And he is equally inconsistent in saying that " a nation may have to go through one stage of knowledge or civilization before it can reach 1 W. Adam, Theories of History , p. 65. 275 COSMIC PHILOSOPHY another, but its going through either is still free'' If by this it is meant that a nation's pro- gress need not be due to constraint exercised over it by other nations, the statement is true, but it is one which no one has thought of disputing. But if it is meant that the latter of two succes- sive stages of civilization is not caused by the former, the statement destroys itself. By ad- mitting that " a nation may have to go through one stage of civilization before it can reach an- other," Mr. Smith gives up his case and con- cedes all which has ever been claimed by those who would construct a science of history. If there is a definite order of sequence among the stages of civilization, that order may sooner or later be formulated, and to formulate that order is to found sociology as a science. But if causa- tion in history is denied, if each epoch is not determined by the preceding epoch, then the inference is inevitable that the French Revolu- tion might have happened in the reign of Louis XL, or that the progress of Christianity might have been eastward instead of westward. Thus all conception of progress, as well as all con- ception of order, is at an end. Thus the vast domain of History, numbering among its com- ponent divisions the phenomena of Language, Art, Religion, and Government, the products of social activity as well as the phases of social progress, becomes an unruly chaos, a Tohu-va- 276 SOCIOLOGY AND FREE-WILL Bohu, where event stumbles after event, and change jostles change, without sequence and without law. I think, therefore, we are quite justified in saying that, when stripped of the metaphysical jargon in which it is usually propounded, the question of free-will becomes an easy one to answer. Having laid the dust which meta- physicians have kicked up, we find our vision no longer obscured. From whatever scientific standpoint we contemplate the doctrine of the lawlessness of volition, we find that its plausi- bleness depends solely on tricks of language. The first trick is the personification of Will as an entity distinct from all acts of volition ; the second trick is the ascription to this entity of " freedom," a word which is meaningless as ap- plied to the process whereby feeling initiates action ; and the third trick is the assumption that desires or motives are entities outside of a person, so that if his acts of volition were in- fluenced by them he would be robbed of his freedom. Any one, however, who is not misled by these verbal quibbles, and who bears in mind that a person, psychologically considered, is nothing more than the sum of his conscious states, will perceive at once that when the de- sires or aversions determine the volitional acts, it is the person himself who determines them. We have accordingly seen that, since liberty of 277 COSMIC PHILOSOPHY choice means nothing if it does not mean the power to exert volition in the direction indicated by the strongest group of motives ; and since all control over character is impossible unless desires and volitions occur in a determinate order of sequence ; it is the doctrine of lawless- ness and not the causationist doctrine which is incompatible with liberty and destructive of responsibility. The rhetoric which Mr. Gold- win Smith lavishes, on the strength of a set of misapplied phrases, might therefore be justly retorted upon him, on the strength of a psy- chologic analysis. And this, which is the con- clusion of science, we have seen to be also the conclusion of common sense. Whatever may be our official theories, we all practically ignore and discredit the doctrine that volition is law- less. Whatever voice of tradition we may be in the habit of echoing, we do equally, from the earliest to the latest day of our self-conscious existence, act and calculate upon the suppo- sition that voHtion, alike in ourselves and in others, follows invariably the strongest motive. And upon this ineradicable belief are based all our methods of government, of education, and of self-discipline. Finally, in turning our attention to history, we have found that the aggregate of thoughts, desires, and volitions in any epoch is so manifestly dependent upon the aggregate of thoughts, desires, and volitions in 278 SOCIOLOGY AND FREE-WILL the preceding epoch, that even the assertors of the lawlessness of volition are forced to com- mit logical suicide by recognizing the sequence. Thus, whether we contemplate volitions them- selves, or compare their effects, whether we re- sort to the testimony of psychology or to the testimony of history, we are equally compelled to admit that Law is coextensive with all orders of phenomena and with every species of change. It is hardly creditable to the character of the present age for scientific enlightenment that such a statement should need to be made, or that thirty-nine pages of critical argument should be required to illustrate it. To many this chapter will no doubt seem much like an elaborate attempt to prove the truth of the multiplication table. Nevertheless where such a blinding metaphysi- cal dust has been raised, a few drops of the cold water of common sense may be not only harm- less but useful. Having thus done somewhat to clear the air, we may next proceed to point out the way in which social changes conform to the Law of Evolution. 279 CHAPTER XVIII THE EVOLUTION OF SOCIETY* A NY attempt to discover the laws to which /-\ social changes conform must run great -^ -^ risk of being frustrated by the mere immensity of the mass of details which the in- vestigator strives to arrange in orderly sequence. Seemingly numberless as are the phenomena dealt with by the physical sciences, they bear no proportion, either in multitude or in variety, to the facts upon which the student of sociology must build his scientific theorems. Facts con- cerning man in his physical relations to soil, climate, food, and the configuration of the earth blend with facts concerning the intellectual and moral relations of men to each other and to the aspects of nature by which they are surrounded, making up a problem of such manifold com- plexity that it may well have long been deemed incapable of satisfactory solution. The fit ground for wonder is, indeed, not that we are as yet un- able to arrive at accurate prevision amid such a diversified throng of phenomena, but that, con- sidering the meagreness of our knowledge in ^ [See Introduction, §§ 22, 23.] 280 1 THE EVOLUTION OF SOCIETY many other departments, we should have been able to detect any uniformity whatever in human affairs, and having detected it, to explain it upon trustworthy scientific principles. There is but one way to conduct such an in- tricate investigation securely to its final issue ; and that is, to make extensive use of elimina- tion as it is employed in the simpler sciences. " If without any previous investigation of the properties of terrestrial matter, Newton had pro- ceeded at once to study the dynamics of the uni- verse, and after years spent with the telescope in ascertaining the distances, sizes, times of re- volution, inclinations of axes, forms of orbits, perturbations, etc., of the celestial bodies, had set himself to tabulate this accumulated mass of observations, and to educe from them the fun- damental laws of planetary and stellar equili- brium, he might have cogitated to all eternity without arriving at a result." This lucid illus- tration, which I have cited from the introduc- tion to Mr. Spencer's " Social Statics," suggests the proper method of approaching the inves- tigation of complex phenomena. Minor per- turbing elements must for a time be left out of consideration, just as the inequalities of motion resulting from the mutual attractions of the planets were at first passed over in the search for the general formula of gravitation. The dis- cussion of endless minute historical details must 281 COSMIC PHILOSOPHY be reserved until the law of social changes has been deduced from the more constant pheno- mena, and is ready for inductive verification. A law wide enough to form a basis for sociology must needs be eminently abstract, and can be found only by contemplating the most general and prominent characteristics of social changes. The prime requisite of the formula of which we are in quest is that it should accurately desig- nate such changes under their leading aspect. Now by far the most obvious and constant characteristic common to a vast number of social changes is that they are changes from a worse to a better state of things, — that they consti- tute phases of Progress. It is not asserted that human history has in all times and places been the history of progress ; it is not denied that at various times and in many places it has been the history of retrogression ; but attention is called to the fact — made trite by long familiarity, yet none the less habitually misconceived — that progress has been on the whole the most con- stant and prominent feature of the history of a considerable and important portion of mankind. Around this cardinal fact have clustered, as I just hinted, many serious misconceptions. The illustrious thinkers of the last century, who endeavoured to study human history from a scientific point of view, were unconsciously led into an error from which contemporary writers 282 THE EVOLUTION OF SOCIETY have not as yet entirely freed themselves. The followers of Turgot and Condorcet were prone to regard progress as something necessary and universal. They attempted to account for it, much as Lamarck tried to explain organic de- velopment, as the continuous and ubiquitous manifestation of an occult, inherent tendency to- wards perfection. Subsequent literature exhib- its many traces of this metaphysical conception. Thus Dr. Whately, in his edition of Archbishop King's discourses, asserts that " civilization is the natural state of man, since he has evidently a natural tendency towards it." Upon which it has been aptly remarked that, " by a parity of reasoning, old age is the natural state of man since he has evidently a natural tendency towards it." Indeed, as this comparison is intended to show, it is difficult to use such ex- pressions as " natural state " and " natural ten- dency" without becoming involved in a con- fusion of ideas. And to ascribe progress to an inherent tendency, without taking into account the complex set of conditions amid which alone that tendency can be realized, is to give us an empty formula instead of a scientific explana- tion. Whether the individual will die young or reach old age, and whether the community will remain barbarous or become civilized, depends, to a great extent, upon environing circum- stances ; and no theory of progress can have 283 COSMIC PHILOSOPHY any value which omits the consideration of this fact. Mr. William Adam labours under the confusion of ideas here signahzed, when he finds fault with Sir G. C. Lewis for upholding the doctrine of progress while admitting that certain races have never advanced in civilization. For this, Mr. Adam accuses him of virtually divid- ing mankind into two differently constituted races, of which the one possesses, while the other lacks, the inherent tendency toward perfec- tion ! ^ He might as well maintain that because we admit that certain men are stunted, while others grow tall, we divide mankind into two differently constituted races, of which the one possesses, while the other lacks, the inherent tendency toward increase in size. Closely allied to this fallacy is that which associates lateness in time with completeness in development, and requires us to assume that nowhere at any time has there been a temporary retrogression. Thus Mr. Goldwin Smith appears to be confused by the impression that the temporary decline in the moral tone of English society after the Resto- ration of Charles II., is a fact inconsistent with the doctrine of a general progress. And Mr. Mansel still more preposterously declares that on the theory of progression we ought to regard the polytheism of imperial Rome as a higher form of religion than the earlier Hebrew wor- ^ W. Adam, Theories of History , p. 87. 284 THE EVOLUTION OF SOCIETY ship of Jehovah. While another form of the same confusion is to be seen in the attempts which writers imbued with the conception of progress often make, to coax the annals of the past into affirming the uninterrupted advance of civilization. These examples show how vaguely the doc- trine of progress has hitherto been apprehended. The fallacy of supposing civilization to have proceeded serially, or uniformly, or in conse- quence of any universal tendency, is nearly akin to the fallacy of classifying the animal kingdom in a series of ascending groups, — a fruitful source of delusion, which it was Cuvier's great merit to have steadily avoided. The theologi- cal habit of viewing progressiveness as a divine gift to man,^ and the metaphysical habit of re- garding it as a necessary attribute of humanity, are equally unsound and equally fraught with error. Until more accurate conceptions are ac- quired, no secure advance can be made toward discerning the true order of social changes. Far from being necessary and universal, progress has been in an eminent degree contingent and par- ^ " It is impossible for mere savages to civilize themselves. . . . Consequently men must at some period have received the rudiments of civilization from a superhuman instructor. '* ( !) Whately's Rhetoric^ p. 94. A statement not altogether com- patible with the one just quoted from the same author in the text. 285 COSMIC PHILOSOPHY tial. Its career has been frequently interrupted by periods of stagnation or declension, and wherever it has gone on, it has been forwarded, not by an inexplicable tendency or nisus, but by a concurrence of favourable conditions, external and internal. We must remember, moreover, as Sir Henry Maine reminds us,^ that the com- munities which have attained to a conspicuous degree of civilization constitute a numerical mi- nority of mankind. Contemporaneous with the rapidly advancing nations of Europe exist the sluggish nations of Asia, and the almost station- ary tribes of Africa and Polynesia. ** Better fifty years of Europe than a cycle of Cathay.'* So irregular, indeed, has been the march of civilization, that most stages of progress may be made the subject of ocular investigation at the present day. In the science of history, therefore, old "means not old in chronology, but in struc- ture : that is most archaic which lies nearest to the beginning of human progress considered as a development, and that is most modern which is farthest removed from that beginning.*'^ Nevertheless, in spite of the fact that the career of progress has been neither universal 1 Ancient Law, p. 24 ; cf. Lewis, Methods of Observa- tion in Politics, vol. i. p. 302. ^ M'Lennan, Primitive Marriage, p. 9. 286 THE EVOLUTION OF SOCIETY nor unbroken, it remains entirely true that the law of progress, when discovered, will be found to be the law of history. The great fact to be explained is either the presence or the absence of progress. And when we have formulated the character of progress, and the conditions essen- tial to it, we have the key to the history of the stationary as well as of the progressive nations. When we are able to show why the latter have advanced, the same general principle will enable us to show why the former have not advanced. Though in biogeny we habitually view the pro- cess of natural selection as the process whereby higher organisms are slowly originated, the prin- ciple loses none of its importance because sun- dry species from time to time suffer deteriora- tion, or remain stationary, or become extinct. When we know how it is that some species ad- vance, we know how it is that other species do not advance. So, in the science of language, which is equally with sociogeny a. science of de- velopment, — being, indeed, neither more nor less than a quite special province of sociogeny, — we rightly consider the main problem solved when we have explained the process of phonetic integration, by which languages ascend from the primary, through the secondary, to the tertiary stage of structure. It matters not that Chinese remains to this day a primary language, and that the numerical majority of languages have not 287 COSMIC PHILOSOPHY yet become tertiary by completely fusing to- gether the component roots of their words. The process by which languages pass from a lower stage to a higher remains none the less the fun- damental phenomenon to be investigated, and when we have generalized the conditions under which this process takes place, we can explain its absence as well as its presence. Now the case is the same with progress in society that it is with progress in language or in organic life. Whether manifested or not manifested in any particular community, progress is still the all- important phenomenon to be investigated. It is the one grand phenomenon, to explain the presence and the absence of which is to explain the phenomena of history. Just as the study of the languages which have advanced furnishes us the key for understanding those which have not advanced, so the study of the progressive communities furnishes us, as we shall see, the law of history ; a law which, in its most gen- eral expression, covers the phenomena presented by the non-progressive communities likewise. Comte was therefore right in restricting the main current of his inquiry to the course of that civilization which began on the eastern shores of the Mediterranean, and has extended over Europe and a portion of America. The same plan will be pursued in the present chapter. Al- though incidental confirmation will be sought 288 THE EVOLUTION OF SOCIETY in the history of the stationary communities, our main problem will be to formulate the law of progress from a comparison of the phenomena presented by the progressive communities. But before we can fairly enter upon our task, it will be desirable for us to note the Factors of Progress with which we shall chiefly have to deal. The prime factors in social progress are the Community and its Environment. The envi- ronment of a community comprises all the cir- cumstances, adjacent or remote, to which the community may be in any way obliged to con- form its actions. It comprises not only the climate of the country, its soil, its flora and fauna, its perpendicular elevation, its relation to mountain chains, the length of its coast line, the character of its scenery, and its geographi- cal position with reference to other countries ; but it includes also the ideas, feelings, customs, and observances of past times, so far as they are preserved by literature, traditions, or monu- ments ; as well as foreign contemporary man- ners and opinions, so far as they are known and regarded by the community in question. Thus defined, the environment may be very limited or very extensive. The environment of an Es- kimo tribe consists of the physical circumstances of Labrador, of adjoining tribes, of a few trad- ers or travellers, and of the sum total of the VOL. Ill 2o9 COSMIC PHILOSOPHY traditions received from ancestral Eskimos. These make up the sum of the conditions affecting the social existence of the Eskimos. The environment of the United States, on the other hand, while it comprises the physical con- ditions of the North American continent, com- prises also all contemporary nations with whom we have intercourse, and all the organized tra- dition — political and ethical, scientific and re- ligious— which we possess in common with all the other communities whose civilization ori- ginated in the Roman Empire. The significance of this increase of size and diversity in the en- vironment will be explained presently. Bearing in mind this definition of a social environment, — which I believe carries with it its own justification, — let us briefly notice the error committed by those writers who would fain interpret all the most important social phe- nomena as due, solely or chiefly, to physical causes. This is an error frequently committed by physiologists who try their hand at the inves- tigation of social affairs, and who attempt to treat sociology as if it were a mere branch of biology. But this is not the case. As we have seen psychology to be an offshoot from biology, specialized by the introduction of inquiries con- cerning the relations of the percipient mind to its environment ; we must similarly regard so- ciology as an offshoot from psychology, special- 290 THE EVOLUTION OF SOCIETY ized by the introduction of inquiries concerning the relations of many percipient and emotion- ally incited minds to each other and to their common environment. As in biogeny all at- tempts to discover the law of organic develop- ment failed utterly so long as the relations of the organism to physical environing agencies were alone studied, and succeeded only when Mr. Darwin took into account the relations of organisms to each other; so still more inevita- bly in sociogeny must all our efforts fail so long as we consider merely the physiologic re- lations of a community to the country in which it dwells, and refuse to recognize the extent to which communities influence each other by means that are purely intellectual or moral. Doubtless the character of the physical environ- ment is of importance, more especially, perhaps, in the earlier stages of civilization. No doubt civilization will first arise, other things equal, in a locality where food and shelter can be obtained with a medium amount of exertion ; where nature is neither too niggard nor too lav- ish in the bestowal of her favours. No doubt there is a physical significance in the fact that civilization began, not in barren Siberia, or in luxuriant Brazil, but in countries like Egypt and Mesopotamia, which were neither so barren as to starve, nor so luxuriant as to spoil, the labourer. No doubt the Greeks owed much to 291 COSMIC PHILOSOPHY the extent of their coast line. No doubt — above all — the Mediterranean is justly sacred to the student of history as partly the civilizer of the peoples who upon its waves first courted adventure, and conducted commerce, and im- parted to each other cosmopolitan sympathies which could never have been evoked but for some such intercourse. All this may be granted. But as civilization advances, the organized ex- perience of past generations becomes to a greater and greater extent the all-important factor of progress. As Comte expresses it, in one of his profoundest aphorisms, the empire of the dead over the living increases from age to age. if we contemplate, from a lofty historical point of view, the relative importance of the factors in the environment of our United States, I be- lieve we shall be forced to conclude that the victory of the Greeks at Marathon, the con- quest of Gaul by Caesar, the founding of Chris- tianity, the defeat of Attila at Chalons and of the Arabs at Tours, the advent of the Normans in England, the ecclesiastic reforms of Hilde- brand, the Crusades, the revolt of Luther, the overthrow of the Spanish Armada, and the achievements of scientific inquirers from Archi- medes to Faraday, have influenced and are in- fluencing our social condition to a far greater extent than the direction of the Rocky Moun- tains, or the position of the Great Lakes, or the 292 THE EVOLUTION OF SOCIETY course of the Gulf Stream. Or if we inquire why the Spaniards are still so superstitious and bigoted, I believe we shall find little enlighten- ment in the fact that Spain is peculiarly sub- ject to earthquakes, but much enlightenment in the fact that for eight centuries Spain was the arena of a life and death struggle between orthodox Christians and Moorish unbelievers. The mention of Spain and earthquakes brings me to Mr. Buckle, a writer of marked ability, who, though he did not explicitly countenance the error I am here criticising, was nevertheless sometimes betrayed into committing it, as may be seen from the following passage : " The Arabs in their own country have, owing to the extreme aridity of their soil, always been a rude and uncultivated people, — for in their case, as in all others, great ignorance is the fruit of great poverty. But in the seventh century they conquered Persia ; in the eighth century they conquered the best part of Spain ; in the ninth century they conquered the Punjab, and eventually nearly the whole of India. Scarcely were they established in their fresh settlements, when their character seemed to undergo a great change. They who in their original land were little else than roving savages were now for the first time able to accumulate wealth, and there- fore for the first time did they make some pro- gress in the arts of civilization. In Arabia they '^93 COSMIC PHILOSOPHY had been a mere race of wandering shepherds ; in their new abodes they became the founders of mighty empires, — they built cities, endowed schools, collected libraries ; and the traces of their power are still to be seen at Cordova, at Bagdad, and at Delhi." ^ To exhibit the utter superficiality of this explanation, we have only to ask two questions. First, if the Arabs became civilized only because they exchanged their na- tive deserts for Spain, Persia, and India, why did not the same hold true of the Turks, when they exchanged their barren steppes for the rich empire of Constantinople ? Though they have held for four centuries what is perhaps the finest geographical p6sition on the earth's surface, the Turks have never directly aided the progress of civilization. Secondly, how was it that the Arabs ever came to leave their native deserts and to conquer the region between the Pyrenees and the Ganges ? Was it because of a geologic convulsion ? Was it because the soil, the cHmate, the food, or the general aspect of nature had undergone any sudden change ? One need not be a profound student of his- tory to see the absurdity of such a suggestion. It was because their minds had been greatly wrought upon by new ideas — because their conceptions of life, its duties, its aims, its pos- sibilities, had been revolutionized by the genius ^ History of Civilization , vol. i. p. 42. 294 r THE EVOLUTION OF SOCIETY of Mohammed. The whole phenomenon re- quires a psychological, not a physical explana- tion. The environment in our problem must, there- fore, not only include psychical as well as phy- sical factors, but the former are immeasurably the more important factors, and as civilization advances their relative importance steadily in- creases. Bearing in mind these preliminary ex- planations, let us now address ourselves to the problem of social evolution, applying to the solution of it sundry biological principles estab- lished in previous chapters. We have first to observe that it is a corollary from* the law of use and disuse, and the kindred biologic laws which sum up the processes of direct and indi- rect equilibration, that the fundamental charac- teristic of social progress is the continuous weak- ening of selfishness and the continuous strengthen- ing of sympathy. Or — to use a more conve- nient and somewhat more accurate expression suggested by Comte — it is a gradual supplant- ing of egoism by altruism. In the course of our inquiry into the causes of organic evolution, it was shown that all the processes cooperating in the development of higher from lower forms of Hfe are in the wid- est and deepest sense processes of equilibration. The all-important truth was there demonstrated, that the progress of life on the earth has been 295 COSMIC PHILOSOPHY the continuous equilibration of the organism with its environment. In the maintenance of such an equilibrium life has been shown to con- sist. Accordingly, as we have seen, if the en- vironment is suddenly and violently altered, the organism perishes ; but when it is altered slowly, the organism slowly adapts itself to it. If the adaptation is not completed within a single gen- eration, nevertheless a sufficient number of gen- erations will complete it, just as the children and grandchildren of an emigrant become more and more thoroughly acclimated to their new home. It is now to be shown that civilization is a slow process of breeding, of adaptation, of ac- climatization — mental and moral, as well as physical, — of equilibration between the Com- munity and the Environment. From age to age the environment is slowly but incessantly changing, and to its gradual changes the human race, embodied in communities, is continually adapting itself. As just observed, I am not re- ferring to the physical environment alone ; for in dealing with society we have to take into the account those psychological factors which have been shown to be by far the most considerable of all. Leaving out of the account all minor considerations of climate, food, or other physi- cal circumstances, and looking at the psycholo- gical factors alone, we must admit that the en- 296 THE EVOLUTION OF SOCIETY vironment is slowly but constantly changing. Every city that is built, every generalization that is reached, every invention that is made, every new principle of action that is suggested, alters in some degree the social environment, — alters the sum total of external relations to which the community must adjust Itself by Instituting new internal relations. The entire organized experience of each generation, so far as it is per- petuated by literature or oral tradition, adds an item to the environment of the next succeeding generation ; so that the sum total of the cir- cumstances to which each generation is required to conform itself is somewhat different from the sum total of circumstances to which the im- mediately preceding generation was required to conform itself Thus the community, by the inevitable results of Its own psychical activity, is continually modifying the environment; and to the environment, as thus continually modi- fied, the community must reciprocally conform itself. Now in the primitive, isolated, savage con- dition of mankind, what was the environment of each family or petty tribe, and what kind of emotional activity was it fitted to awaken ? The unanimous testimony of scientific explor- ers, and others who have carefully studied the primitive phases of society, leaves us In little doubt as to this question. As Mr. M'Lennan 297 COSMIC PHILOSOPHY concisely expresses it, " The state of hostility is the normal state of the race in early times/' ^ The environment of each little tribe is a con- geries of neighbouring hostile tribes ; and the necessity of escaping captivity or death involves continual readiness for warfare, and the contin- ual manifestation of the entire class of warlike unsocial passions. While, on the other hand, the tribe is so small and homogeneous, that the opportunity for the exercise of sympathetic and social feelings is confined chiefly to the conjugal and parental relations. Nevertheless in the ex- ercise of these feelings in these relations are con- tained the germs of all subsequent social progress. While without the limited sphere of the tribe all is hatred, revenge, and desire to domineer, within the limits of the tribe there is room for the rudimentary display of such feelings as loy- alty, gratitude, equity, family affection, personal friendship, and regard for the claims of others. Since these feelings can be exercised only within family or tribal limits, it follows that the sphere for their exercise is relatively small ; while as the hostile or egoistic feelings are conformed to the whole environment outside of the tribe, it follows that the sphere for their exercise is large. Hence, in this primitive state of society, the egoistic feelings, being oftenest called into play in the habitual occupations of life, will be most 1 Primitive Marriage^ p. 134. 298 THE EVOLUTION OF SOCIETY active and will overbalance the altruistic feelings. While, on the other hand, as the kindlier sym- pathies are but nascent, even the altruistic feel- ings, such as they are, will be strongly tinged with egoism. The highest emotion attainable will be clannishness, and the highest rule of duty will be that which enjoins loyalty to the tribal patriarch. This is actually found to be the emotional and ethical condition of primi- tively organized communities, wherever they have been attentively studied by competent ob- servers. Such, for example, has been the state of things existing from time immemorial among the American Indians, among the Polynesians, and among the Arabs of the desert ; and these aspects of clan society, in a somewhat later stage, among the Scottish Highlanders, are well por- trayed in several of the Waverley Novels. Now what is it that chiefly determines the slow development of the altruistic feelings and the gradual atrophy of the egoistic feelings ? Obviously it is the growth of the community in size and complexity, — the gradual enlargement of the area over which the altruistic feelings ex- tend, and the gradual increase in the number of social situations which demand the exercise of those feelings. These conditions are partly fulfilled when the tribal community grows to a vast size, remaining structurally a tribe with a patriarchal head, — as was the case in ancient 299 COSMIC PHILOSOPHY Egypt, Assyria, Persia, and India, and as is still the case in China. But they are still better ful- filled when the community increases in the com- plexity of its internal relations, and, instead of remaining a tribe, becomes a federation of civic bodies, as in ancient Greece, or a single great civic body, uniting various tribal elements, as in ancient Rome. In each of these cases, the increased power of self-protection renders war- fare less necessary and frequent, and the partial supplanting of the primitive predatory life by the occupations of agriculture and trade begins to make men more and more dependent on one another over a wider and wider area, and to create a whole class of interests to which warfare and destructiveness are more and more inimical. And in the latter case, where the community assumes a civic character, the rise of a genuine political life begins to make men operate on each other by indirect compulsion, or by persua- sion, rather than by direct and brutal compul- sion ; and the highest attainable ethical feeling is no longer clannishness, but patriotism, in the exalted sense in which that word was understood by the Greeks and Romans. Note also that under the influence of this high ethical feeling, even military life loses its primitive purely ego- istic character, and becomes a school of self-dis- cipline and self-sacrifice, nourishing in no slight degree the altruistic feelings. If we compare 300 THE EVOLUTION OF SOCIETY the campaigns of Marathon and Thermopylai with the expedition of a band of Highlanders in execution of a blood-feud, or with the excur- sion of a party of Red Indians on the warpath, we shall find no difficulty in realizing the force of these considerations. But, like other phenomena in nature, our ethical feelings are not sharply marked off from each other. There is a selfish as well as a sym- pathetic side to patriotism (understanding the word always as the Greeks and Romans under- stood it.) At the one extreme, patriotism is akin to clannishness ; at the other extreme, it be- comes so wide as to resemble cosmopoHtanism. As long as the purely civic structure of society lasted, the clannish element was distinctly pre- sent in patriotism. Greek history, after the ex- pulsion of the Persians, is the history of the struggle between the higher and the lower pa- triotism, — between the two feelings known to the Greeks as Pan-Hellenism and Autono- mism, represented respectively by Athens and by the Doric communities. The mournful history of Thukydides tells us how autonomism won the day, entailing the moral and political failure of Greek civilization. But when Rome had extended her beneficent sway over all the precincts of the Mediterra- nean, uniting communities hitherto autonomous and hostile by common interests of culture and 301 COSMIC PHILOSOPHY of commerce, and bringing aggressive warfare to an end in the Pax Romana^ then there be- came possible a cosmopolitan spirit, a Christian feeling, which regarded all men as legally and ethically equal, — equal before the Emperor, and equal before God. To trace the slow growth of this feeling in the annals of Roman law and of Stoic philosophy, and to observe its culmi- nation in the genesis of Christianity,^ is to ob- tain the key to Roman history. But great political changes were necessary before Rome could carry to the end its great work, — partly because it had increased in size so much faster than it increased in structure. It crushed autonomism too rapidly. It developed imperialism at the expense of nationality. And hence the time at last arrived when the mutual cohesion of its provinces became too slight to withstand those barbaric assaults from without, which — as we should be careful to remember — had all along been intermittently attempted from the days of Brennus to those of Alaric. For a time, European society seemed likely to 1 Of course it is not meant to imply that other elements were not at work in the genesis of Christianity. The growth of what Matthew Arnold calls the ** spirit of Hebraism," not in Judaea merely, but throughout the Grasco-Roman world, is an interesting phenomenon in this connection, but the treat- ment of it does not fall within the scope of the present exposition. 302 THE EVOLUTION OF SOCIETY disintegrate into a set of tribal communities. But the old Empire had done its work too thor- oughly for that. Roman principles, embodied in the Catholic Church, and in the renovated Em- pire of Charles the Great, exerted an organiz- ing power which prevailed over the spirit of clannish isolation, and by effecting the grand series of compromises which we vaguely desig- nate as the feudal system, laid the basis of mod- ern society. If now we examine the ethical circumstances of that vast modern fabric which has been reared upon material supplied in the older days of Rome — and which owes so much of its per- manent character to the labours of the great Catholic and Imperial statesmen of the Middle Ages — we shall find that the process here de- scribed has been continually going on. For the primitive normal state of warfare there has been gradually substituted a normal state of peace. While in primitive times the interests of men were supposed to coincide only throughout the limited area of a petty clan, they are now seen to coincide throughout vast areas, and the rail- way, the steamship, and the telegraph are daily bringing communities into closer union, and, as George Eliot well expresses it, " making self- interest a duct for sympathy." The spirit of Christianity, first rendered possible by Roman cosmopolitanism, has made, and is ever making, 303 COSMIC PHILOSOPHY wider and deeper conquests as civilization ad- vances. By the primitive savage moral duties were imperfectly recognized, but only within the limits of the clan. By the Greek the ethical code was enlarged, but it was a code not apphcable to barbarians. The mediaeval Christian had a still longer list of duties owed by him to all mankind, his brethren in the sight of God ; and to the ancient conception of justice thus mate- rially widened, he added, in elementary shape, the conception of benevolence or the " enthusi- asm of humanity ; " but the familiar maxim that " no faith need be kept with heretics " shows that even to his conception of duty there were practical limits narrower than would now be ad- mitted. The modern, on the other hand, recog- nizes that he owes certain duties to all men with whom he may be brought into contact, not be- cause they are his kindred, or his neighbours, or his countrymen, or his fellow Christians, but because they are his fellow men. Such is our ethical standard, however imperfectly conformed to ; and neither ancient nor mediaeval had such an ethical standard. Compare also the ideal types of perfect manhood at the two extremes of civilization within our ken. The primitive type is the man of intense personality, with an enormous sense of his own importance, easily roused to paroxysms of anger, brooking no con- tradiction, disregardful of the feelings of others, 304 THE EVOLUTION OF SOCIETY domineering over all within his reach. The modern type is the man of mild personality, shunning the appearance of self-assertion, slow to anger, patient of contradiction, mindful of the feelings of those about him, unwilling to " make trouble." Such is the contrast between the typi- cal ancient and the typical modern ; and it im- plies a prodigious alteration in the dominant ethical feelings of the progressive portion of our race. This change, as we now see, has been wrought by the slow but incessant modification of the social environment to which each generation of men has had to conform its actions. The altru- istic feelings, finding at each successive epoch a wider scope for action, have become gradually strengthened by use ; while the egoistic feelings, being less and less imperatively called into play, have become gradually weakened by disuse. And this change in the environment we per- ceive to have been wrought by the continuous growth of the community in size and complex- ity. Where, as among stationary tribes of sav- ages, there has been no such growth, there the moral type of the primeval man is still to be found ; and where, as among the stationary com- munities of Asia, there has been growth in size without corresponding growth in complexity, there the moral type is intermediate between that of the barbarian and that of the inheritor VOL. Ill 3^5 COSMIC PHILOSOPHY of Roman civilization. Thus the progress of society is a mighty process of equilibration or adjustment, in the course of which men's rules of action and emotional incentives to action be- come ever more and more perfectly fitted to the requirements arising from the circumstance of their aggregation into communities. Here we have arrived at a rudimentary concep- tion of the law of social progress, so far as it can be obtained from a comprehensive historical in- duction, aided and verified by deduction from a few fundamental truths of biology. The fore- going discussion has brought out one point of fundamental importance, in which the develop- ment of social life agrees with the development of organic life : both are continuous processes of adjustment or equilibration. But in all this there is nothing more than might have been an- ticipated. Since the phenomena of society are really but the phenomena of life, specialized by the addition of new groups of circumstances, we must expect to find that the law of social evolution will be identical with the law of or- ganic evolution, save only that it will require an all-important additional clause to express the results of the action of the superadded circum- stances. Let us then seek to ascertain definitely, — first, in what respects the two kinds of evo- lution agree, and secondly , in what respects they differ. 306 THE EVOLUTION OF SOCIETY In the first place the evolution of society, no less than the evolution of life, conforms to that universal law of evolution discovered by Mr. Spencer, and Illustrated at length In earlier chapters. The brief survey just taken shows us that social progress consists primarily In the in- tegration of small and simple communities Into larger communities that are of higher and higher orders of composition ; and in the more and more complete subordination of the psychical forces which tend to maintain isolation to the psychical forces which tend to maintain aggrega- tion. In these respects the prime features of social progress are the prime features of evolu- tion in general. In the second place, the progress of society exhibits those secondary features of differentia- tion and integration which evolution universally exhibits. The advance from indefinite homo- geneity to definite heterogeneity in structure and function Is a leading characteristic of social progress. On considering primitive societies, we find them affected by no causes of hetero- geneity except those resulting from the estab- lishment of the various family relationships. As Sir Henry Maine has shown, in early times the family and not the individual was the social unit. In the absence of anything like national or even civic organization, each family chief was a monarch in miniature, uniting in his own 307 COSMIC PHILOSOPHY person th^functions of king, priest, judge, and parliament ; yet he was scarcely less a digger and hewer than his subject children, wives, and brethren. Commercially, it is needless to say, all primitive communities are homogenous. In any barbarous tribe the number of different em- ployments is very limited, and such as there are may be undertaken indiscriminately by every one. Every man is his own butcher and baker, his own tailor and carpenter, his own smith, and his own weapon maker. Now the progress of such a society toward a civilized condition begins with the differentiation and in- tegration of productive occupations. That each specialization of labour entails increased effi- ciency of production, which reacting brings out still greater specialization, is known to every tyro in political economy. Nor is it less obvious that, with the advance of civilization, labour has been steadily increasing in coherent hetero- geneity, not only with regard to its division among different sets of mutually dependent labourers, but also with regard to its processes, and even its instruments. The distinguishing characteristic of modern machinery, as compared with the rude tools of the Middle Ages or the clumsy apparatus of the ancients, is its definite heterogeneity. The contrast between the steam- engine of to-day and the pulleys, screws, and levers of a thousand years ago assures us that the 308 THE EVOLUTION OF SOCIETY growing complexity of the objects which labour aims at is paralleled by the growing complex- ity of the modes of attaining them. Turning to government, we see that by differentiation in the primeval community some families acquired supreme power, while others sank, though in different degrees, to the rank of subjects. The integration of allied families into tribes, and of adjacent tribes into nations, as well as that kind of integration exhibited at a later date in the closely knit diplomatic interrelations of differ- ent countries, are marked steps in social pro- gress. Next may be mentioned the differentia- tion of the governing power into the civil and the ecclesiastical ; while by the side of these cere- monial government grows up insensibly as a third power, regulating the minor details of so- cial intercourse none the less potently because not embodied in statutes and edicts. Compar- ing the priests and augurs of antiquity with the dignitaries of the mediaeval church, the much greater heterogeneity of the latter system be- comes manifest. Civil government likewise has become differentiated into executive, legislative, and judicial. Executive government has been divided into many branches, and diversely in different nations. A comparison of the Athe- nian popular government with the representa- tive systems of the present day shows that the legislative function has no more than any of 309 COSMIC PHILOSOPHY the others preserved its original homogeneity ; while the contrast between the Aula Regis of the Norman kings and the courts of common law, equity, and admiralty, — county courts, queen*s courts, state courts, and federal courts, — which are hneally descended from it, tells us the same story concerning the judicial power. Nor should it be forgotten that the steady ex- pansion of legal systems, to meet the exigencies which civilization renders daily more complex, is an advance from relatively indefinite homo- geneity to relatively definite heterogeneity. Obviously, however, our task is not com- pleted when we have pointed out this general coincidence between the development of soci- ety and the development of life. Nor can the universal law here illustrated be the special law of social progress for which we are seeking. By reason of its very comprehensiveness, the law of universal evolution cannot be regarded as sup- plying the precise kind of information we desire concerning the relations of social to organic phe- nomena. By its aid we have found it possible to interpret not only the development of life, intel- ligence, and society, but also the genesis of plan- etary systems and the evolution of the earth. It is therefore the law not only of social, psychical, and vital changes, but also of inorganic changes. Underlying all the sciences of genesis, and fusing them into one grand science of cosmogony, it 310 THE EVOLUTION OF SOCIETY utters no truth concerning organic or social de- velopment which is not equally true of all devel- opment. Thus while it is indeed, in the deep- est sense, the ultimate law to which organic and superorganic changes conform, it is silent re- specting the differential characteristics by which these changes are distinguished from inorganic changes. Already in treating of the evolution of life we saw that the ultimate and general formula needed to be supplemented by a de- rivative and special formula, which should de- scribe organic development in terms inapplicable to inorganic phenomena. And this formula we found in the definition of life as the continuous adjustment of inner to outer relations, upon which also was afterwards based our entire the- ory of the evolution of intelligence. Now the historic survey into which we were led a moment ago, while inquiring into the progress of moral feelings, showed us that, in this respect also, the evolution of society agrees with the evolution of life in general. The pro- gress of a community, as of an organism, is a process of adaptation^ — a continuous establish- ment of inner relations in conformity to outer relations. If we contemplate material civiliza- tion under its widest aspect, we discover its legitimate aim to be the attainment and main- tenance of an equilibrium between the wants of men and the outward means of satisfying 3" COSMIC PHILOSOPHY them. And while approaching this goal, society- is ever acquiring in its economic structure both greater heterogeneity and greater specialization. It is not only that agriculture, manufactures, commerce, legislation, the acts of the ruler, the judge, and the physician, have since ancient times grown immeasurably multiform, both in their processes and in their appliances ; but it is also that this specialization has resulted in the greatly increased ability of society to adapt itself to the emergencies by which it is ever beset. The history of scientific progress is in like manner the history of an advance from a less complete toward a more complete corre- spondence between the order of our conceptions and the order of phenomena. Truth — the end of all honest and successful research — is at- tained when subjective relations are adjusted to objective relations. And what is the consum- mation of moral progress but the thorough adap- tation of the desires of each individual to the requirements arising from the coexistent desires of all neighbouring individuals ? Thus the phe- nomena of social and of organic progress are seen to correspond to a degree not contem- plated by those thinkers who, from Plato to Hobbes, have instituted a comparison between them. The dominant characteristics of all life are those in which social and individual life agree. 312 THE EVOLUTION OF SOCIETY Let us now examine more closely the relations between the Community and the Environment. From the twofold circumstance that life is high according as the organism is heterogeneous, and also according as it is adjusted to surrounding conditions, may be derived the corollary that the heterogeneity of the environment is the chief proxi- mate determining cause of social progress. Thus we may understand why civilization advances so much more rapidly in modern than it did in an- cient times.^ As Sir Charles Lyell observes : " We see in our own times that the rate of progress in the arts and sciences proceeds in a geometri- cal ratio as knowledge increases, and so, when we carry back our retrospect into the past, we must be prepared to find the signs of retarda- tion augmenting in a like geometrical ratio ; so that the progress of a thousand years at a re- mote period may correspond to that of a cen- tury in modern times, and in ages still more remote Man would more and more resemble the brutes in that attribute which causes one gener- ation exactly to imitate in all its ways the gen- eration which preceded it/* ^ That the process is here the same in social and in organic life. Sir Charles Lyell already suspects ; for he elsewhere observes that the lower the place of organic beings " in a graduated scale, or the simpler their structure, the more persistent are they in * See above, p. 72. 2 Antiquity of Man, p. 377. 2^3 COSMIC PHILOSOPHY form and organization. In whatever manner the changes have been brought about, the rate of change is greater where the grade of organization is higher." And this fact results from the more complex relations of the higher beings to their environment. Applying these considerations to history, it will be seen that, owing to the politi- cal isolation of ancient communities, the hetero- geneity of their environments must have been inconsiderable. Holding little intercourse with each other, and accommodating their deeds and opinions mostly to the conditions existing at home, their progress was usually feeble and halt- ing. Owing to the enormous heterogeneity of the environment to which modern communities are forced to adjust themselves, progress in later ages has been far more rapid and far more stable than of old. The physical well-being of an an- cient Greek was not enhanced by an invention made in China, nor could his philosophy derive useful hints from theories propounded in India. But in these days scarcely anything can happen in one part of our planet which does not speed- ily affect every other part. The physical en- vironment of a modern European extends over a great part of the earth's surface, and his psy- chical environment is scarcely limited in time or space. His welfare is not unfrequently aifected by accidents occurring at the antipodes, while his plans for the coming year are often shaped 3H THE EVOLUTION OF SOCIETY with conscious or unconscious reference to events which happened centuries ago. That the rapid and permanent character of modern pro- gress is in great measure due to this circum- stance will be denied by no one. And thus is explained the wonderful civilizing effect of various events which have from time to time brought together distant sections of mankind ; among which it will be sufficient merely to name the campaigns of Alexander, the spread of Roman dominion, the Arabian conquests, the Crusades, and the voyages of Columbus, Ma- gellan, and De Gama. The invention of print- ing, increasing the rapidity and the frequency with which the thoughts of various minds are brought into contact, offers another illustration ; and in a similar way is to be explained the civi- lizing agency of railroads and telegraphs. Comparing these deductions with the histori- cal survey of ethical development above taken, we arrive at a set of mutually harmonious con- clusions. We see that the process of intellectual and moral adaptation which constitutes social progress is determined by the steadily increasing heterogeneity of the social environment. And we see that this increased heterogeneity of the environment is caused by the integration or growing interdependence of communities that were originally isolated. We have now to ex- amine this process of integration somewhat 3^5 COSMIC PHILOSOPHY more in detail. By instituting a novel compari- son between the processes of organic and of social life, we shall be led directly to the special law of progress for which we are seeking. Observe first that the living beings which are lowest, or next to the lowest, in the scale of organization — as, for example, the protococcus and the amoeba — are nothing but simple cells. It has been shown, by Mr. Spencer, that pro- gress in morphological composition, both in the animal and in the vegetable kingdoms, consists primarily in the union of these simple cells into aggregates of higher and higher orders of com- plexity. Now in the study of social evolution we are met by precisely similar phenomena. Let us consider what is implied by the conclusions at which Sir Henry Maine has arrived, in his profound treatise on " Ancient Law," by an elaborate inquiry into early ideas of property, contract, and testamentary succession, and into primitive criminal legislation. " Society in an- cient times," says Sir Henry Maine, "was not what it is assumed to be at present, a collection of individuals} In fact, and in the view of the men who composed it, it was an aggregation of ^ [In chapter ix. of Part III. of his Principles of Sociology y Spencer criticises the theory of Maine at length, and under- takes to show its limitations. Fiske would probably have been led to modifications of his views had this chapter been before him.] 316 THE EVOLUTION OF SOCIETY families. The contrast may be most forcibly expressed by saying that the unit of an ancient society was th^ family, of a modern society the individuals^ But originally the family govern- ment excluded not only individual independ- ence, but also state supremacy. The sole gov- ernment actual or possible was that exercised by the male head of a family group. By slow stages various family groups closely akin in blood ap- pear to have become integrated into tribes or clans, community of descent being still the only conceivable bond which could hold together a number of individuals in the same political ag- gregate. At a later stage the limits of the tribe were further enlarged by the important legal fiction of" adoption," or the pretence that newly added members were descended from some con- spicuous common ancestor of the tribe. Vestiges of a time when there were no aggregations of men more extensive than the tribal community thus constituted, and when there was no sover- eign authority save that exercised by the head of the tribe, may be found in every part of the world,^ and among totally savage races this state ^ Ancient LaWy p. 126. 2 ** The yei/o? of Athens, the gens of Rome, the mark or gemeinde of the Teutonic nations, the village community of the East ... the Irish clan, are all essentially the same thing.'* Freeman, Comparative Politics y p. 102. See, among other authorities, Volney's View of the United COSMIC PHILOSOPHY of things still continues. Now we shall find something more than an instructive analogy in the comparison of the primitive family group to a unicellular organism, for such a comparison will enable us to realize that in social and in organic evolution the process of integration has been substantially the same. The first well- marked stage in coalescence is the formation of the tribe or clan, which may be compared to those lowly organisms made up by the union of amoeba-like units with but little specialization of structure or function. At this stage social organization is but one step removed from that absolute and ferocious anarchy which charac- terizes the non-social life of brutes. " Mis- trust, jealousy, secret ambushes, and implacable vengeances" characterize the mutual relations of these social " aggregates of the first order." Hostility is the rule, and peace the exception. The repulsive forces are stronger and the cohe- sive forces weaker than at any subsequent period. As we have seen above, the selfish impulses which tend to maintain savage isolation are as States y p. 397 ; Phillipp on Jurisprudence , p. 207 ; Charles Comte, Traite de Legislation, liv. iii. chap. 28 ; Grote, His- tory of Greece, vol. iii. pp. 49-69 ; Gibbon (Paris edition), vol. iii. p. 243 ; Vico, Scienxa Nuova, Opere, torn. iv. pp. ^3> 35> 40; Aristotle, Eth. Nikom. viii. 14; Tacitus, Ger mania, vii.; Csesar, Bell. Gall. vi. 22, 23. 318 THE EVOLUTION OF SOCIETY yet unchecked save by instinctive loyalty within the tribal limits. The coalescence of such tribes into civic com- munities is the formation of social " aggregates of the second order." For a long time these higher aggregates retain conspicuous traces of their mode of composition, as in Greece and Rome,^ until increasing social heterogeneity ob- literates the original lines of demarcation ; while new divisions spring up, resulting from the in- tegration of like parts, as is seen in the guilds of mediaeval Europe, and still better in the lo- calization of industries which marks the present time. The coalescence of civic and tribal commu- nities into the nation — an " aggregate of the third order " — is well exemplified in the his- tory of France, which, from a disorderly col- lection of independent baronies, has passed by well-defined transitions into a perfectly integral nation. The attainment of this stage is indis- pensable to a career of permanent progress. As hinted above, the premature overthrow of the 1 The structure of the Amphiktyonic union shows *« that the system of cities with which we are so familiar in Grecian history grew out of an earlier system of tribes." Freeman, Comparative Politics y p. 88. Further evidence, in abundance, may be found in the succeeding pages of that excellent book, which reads, from beginning to end, almost hke a commen- tary upon this chapter. COSMIC PHILOSOPHY Hellenic political system is to be attributed to its very incomplete integration. An aggregate of the national type was in process of forma- tion by the extensive coalescence of maritime cities under the leadership of Athens, when the Peloponnesian war intervened, vindicating the superiority of selfish autonomy, and showing by its result that the civilizing spirit of nationality was as yet too feeble to prevail. It was first under Roman dominion that national aggregation and the feeling of national solidarity began to be brought to something like completeness. By absorbing nearly all the petty communities then existing within the lim- its of the Mediterranean world, and by gradually extending to their members the privileges of citizenship, Rome succeeded in dealing to the passion for autonomy a blow from which it has never recovered ; while the enormous extent of the Empire, and its ethnic heterogeneity, im- parted to the national spirit thus evoked a cos- mopolitan character destined to be of prodigious service^ to civilization. The influence of these circumstances upon the attitude of Christianity I have already alluded to, and it cannot be too strongly insisted upon. No human mind could have even conceived, much less have carried into execution, the idea of a universal religion, if the antique state of social isolation had not previously been brought to a close in universal 320 THE EVOLUTION OF SOCIETY empire. If Christianity had appeared four cen- turies earlier than it did, it would, like Bud- dhism, have assumed the garb of a local religious reformation. Or if it could have aimed at any- thing higher and more comprehensive than this, its preaching would have fallen upon ears not ready to receive it. All the Oriental enthusi- asm, all the Hellenic subtlety of Paul could have effected nothing, had he visited Athens in the days of Plato and Diogenes. But the cos- mopolitan element in Roman civilization was just that which Christianity most readily assimi- lated, and which it intensified by setting up a new principle of common action in place of the primeval principle of community of race. From this happy concurrence of circumstances there was formed, upon the ruins of Paganism, that re- ligious organization which alone, of all churches that have existed, has earned the glorious name of Catholic. Disgusted at some of her high- handed proceedings in later times, Protestant historians have too generally forgotten that the Roman Church, by coordinating the most vig- orous and progressive elements of ancient life, prepared the way both for the ubiquity and for the permanence of modern civilization. Had the ecclesiastical system of the Empire perished, along with the breaking up of its political sys- tem ; had there been really that wreck of an- cient institutions in the fifth century which was VOL. Ill 321 COSMIC PHILOSOPHY formerly supposed to have occurred, until Mr. Bryce and Mr. Freeman' dispelled the gross error ; it is difficult to see how mediaeval Euro- pean history could have been politically any- thing more than a repetition of Grecian history, save only in the extent of its geographical range. Whoever is disposed to doubt so emphatic an assertion will do well duly to ponder the fact that the newly arriving Teutonic subjects of the Empire (who would, in such case, have come as foreign conquerors) had not advanced be- yond the stage of tribal organization. On their further aggregation into rural and civic bodies, the autonomous spirit would have acquired an ascendency which it might well have taken an- other more fortunate Athenian federation, or another all-absorbing Roman domination, thor- oughly to destroy. Even as it was, it required all the immense power of the Church, unflinch- ingly exercised through many generations, to prevent European society from disintegrating into a mere collection of mutually repelling tribal communities. But the Church not only preserved the best social results of Roman do- minion, by hastening the consolidation of each embryonic nationality ; it also, by its peculiar position as common arbiter between the difl^er- ent states thus arising, assisted in the formation of a new social aggregate of a yet higher order. The modern system of independent nationali- 322 THE EVOLUTION OF SOCIETY ties held in virtual federation — not by interna- tional codes, but by the possession of guiding principles of conduct more or less heartily rever- enced by all — is chiefly the work of the Roman Church. Here, finally, we have reached a sys- tem whose structure bears in the highest degree the marks of permanence. It is sustained by the ever-deepening sentiments of cosmopolitan philanthropy and universal justice, — the most cohesive of social forces, as the spirit of local selfishness was the most disruptive. Here it might seem that we have obtained all the data requisite for enunciating our law of social progress. But something is still wanting. Our law of progress, if now enunciated, would be too general. It would cover alike the phe- nomena of social and of organic life. In both there is an advance from indeterminate uni- formity to determinate multiformity ; in both there is a continuous adaptation of the organism or the community to its environment ; and in both there is a continuous integration, entail- ing an advance from incoherence to coherence of structure. We must now start in search of that all-important clause which shall express the essential difi^erence between organic and social progress. In the ancient family community, as deline- ated by Sir Henry Maine, the separate exist- ence of the individuals was almost submerged 3^3 COSMIC PHILOSOPHY and lost in the corporate existence of the aggre- gate. Personal freedom was entirely unrecog- nized. To family duties all individual rights were subjected. By a tie, religious no less than political, the members of the family were all held in allegiance to its oldest male representa- tive. The father might abandon his son in in- fancy, and when grown up might sell him as a slave, or put him to death for disobedience. And the wife was to an equal extent in the power of her husband, to whom she legally stood in the relation of a daughter, so that mar- riage was but the exchange of one form of ser- vitude for another. N o transfer of property was valid, unless the persons conducting it swore in the name of some ancestor, — dead ages ago, it might be ; for so absolute was the author- ity of the paterfamilias that it could not be conceived as departing from him at death, but must be exercised by him, through the medium of prescriptive ceremonial, over whole gener- ations to come. Nothing, in short, was regu- lated by contract, but everything was determined by status} And this is the fact which irretriev- ably demolishes Rousseau's theory that social aggregation is due to a primitive compact. That 1 This term is well defined by Heineccius : ** Status est qualitas cujus ratione homines diverse jure utuntur. . . . Alio jure utitur liber homo ; alio servus ; alio civis ; alio pere- grinus.'* Re cita Hones, lib. i. tit. 3. THE EVOLUTION OF SOCIETY theory is merely an illegitimate attempt to ex- plain an ancient phenomenon by causes which have had only a modern existence.^ The mem- ber of a primitive tribal community had no con- ception of contract ; what he was born to do belonged to his status ; and that he must do. The prevalence of this state of things in the empires of the East is chief among many con- verging proofs that those nations are nothing but immense tribes, or aggregates of the first order. With the rise of higher aggregates, such as states, civic or imperial, this sinking of the individual in the corporate existence still for some time continued. The rights and duties of the individual were still unrecognized, save in so far as they followed from the status in which he happened to be placed. In republican Rome, and in the Hellenic communities, the welfare of the citizen was universally postponed to the welfare of the state. But circumstances too complicated to be here detailed, of which the chief symptom was the increasing importance assigned by Roman jurisprudence to contracts, resulted, at an advanced period of the empire, in the more or less complete recognition of in- 1 See the discussion of the doctrine in Austin, Province of Jurisprudence y pp. 331—371 ; Kant, Rechtslehref Th. ii. Abschn. i. ; Stahl, Philosophie des RechtSy ii. 142 ; Maine, Ancient Law, chap, ivo 325 COSMIC PHILOSOPHY dividual rights and obligations. On the rise of the feudal system, the relations of vassal to suzerain were, through the influence of Roman conceptions, extensively regulated by contract ; and it is in this respect that the feudal institu- tions are most widely distinguished " from the unadulterated usages of primitive races.'* ^ It was, I believe, mainly owing to this that the integration of feudal lordships into nations was accompanied by the enlargement of individual liberty to a much greater extent than the inte- gration of ancient clans, gentes, and phratries into civic communities. The Roman Church also aided in promoting the freedom of individ- uals, as well as in facilitating the consoHdation of states. By the more or less strict enforce- ment of clerical celibacy, it maintained in the midst of hereditary aristocracy a comparatively democratic organization, where advancement largely depended upon moral excellence or in- tellectual ability. And preserving, by the same admirable institution, its independence of feudal patronage, it was often enabled successfully to interpose between the tyranny of kings and the helplessness of subjects. To ecclesiastical celi- bacy, more than to almost any other assignable institution, we owe our emancipation from an- cient patriarchal conceptions of social duty. The development of industry, crossing in various 1 Maine, op. cit. p. 365. 326 THE EVOLUTION OF SOCIETY ways the antique divisions of society, has con- tributed to the same result ; until, in modern times, the primitive mode of organization is almost entirely effaced, leaving but few barely traceable vestiges. Individual rights and obli- gations, from being nothing, have come to be all in all. While originally the individual was thought to exist only for the sake of the state, the state is now regarded as existing only for the sake of the individual. It will thus be seen that the very same pro- cess, which has resulted in the formation of social aggregates of a higher and higher order, has also resulted in the more and more com- plete subordination of the requirements of the aggregate to the requirements of the individual. And be it further noticed, that the relative strength of the altruistic feelings, which main- tain the stability of the highest social aggrega- tion, maintains also to the fullest extent the in- dependence of its individual members ; while the relative strength of the egoistic feelings, which in early times prevented the existence of any higher organization than the family or tribe, was also incompatible with individual freedom of action. Now this is precisely the reverse of the state of things which we find in organic evolution. In organic development, the indi- vidual life of the parts is more and more sub- merged in the corporate life of the whole. In 327 COSMIC PHILOSOPHY social development, corporate life is more and more subordinated to individual life. The high- est organic life is that in which the units have the least possible freedom. The highest social life is that in which the units have the greatest possible freedom. This feature of social evolu- tion is most conveniently described by Schel- ling's term individuation^ which is employed in a kindred sense both in Mr. Spencer's and in other modern works on biology. Thus we have at last reached the conclusion in quest of which we set out. Supplementing our previous results, according to which organic and social evolution were seen to agree, by our present result, according to which they are seen to differ, we obtain a formula for social evolu- tion which may be regarded a^ fundamentally accurate. We obtain the Law of Progress, which may be provisionally stated as follows : — " The Evolution of Society is a continuous est ah- lishment of psychical relations within the Commu- nity, in conformity to physical and psychical rela- tions arising in the Environment ; during which, both the Community and the Environment pass from a state of relatively indefinite, incoherent homogeneity to a state of relatively definite, coherent heterogeneity ; and during which, th^ constituent Units of the Community become ever more distinctly individuated r In the next chapter I shall proceed to show 328 THE EVOLUTION OF SOCIETY how this exceedingly general and technical for- mula includes and justifies whatever is defensi- ble in sundry less abstract generalizations, ex- pressed in more popular language, by Comte and Buckle. We shall be called upon to pass in review certain phases of social evolution, and to criticise, with the aid of the theorems now at our disposal, the claims of Comte to be regarded as the founder of sociology. 3^9 CHAPTER XIX ILLUSTRATIONS AND CRITICISMS ^ THE discussion contained in the fore- going chapter has shown to what a notable extent the phenomena of social evolution may be expressed, with the strictest accuracy, by formulas originally invented to de- scribe the evolution of life in general. Let us briefly review the results which we have already obtained. First, we saw that social as well as organic evolution consists in the continuous adaptation of the community, or organism, to the environ- ment. Or, expressing the same thing in other words, social progress is a continuous establish- ment of inner relations in conformity to outer relations. Secondly, we saw that in the course of this adaptation the community, like the organism, continually increases in definite heterogeneity, through successive differentiations and integra- tions. Thirdly, we saw that in the community, as in the organism, the increase in internal heteroge- 1 [See Introduction, § 24.] ILLUSTRATIONS AND CRITICISMS neity is determined by the continuous increase of heterogeneity in the environment. Fourthly^ we saw that the increase of hetero- geneity in the environment is determined by the successive integratipn of communities into more and more complex and coherent aggregates. And this law alsoHolds of organic progress. These four generalizations, expressing the points in which social and organic development coincide, were summed up in the first two clauses of our law of progress. They are imme- diate corollaries of the law of universal evolution and of the definition of life as adjustment. They are not to be understood as mere expressions of striking analogies. They are to be understood as implying that the evolution of life and the evolution of society are, to a certain extent and in the most abstract sense, identical processes. Such a conclusion, indeed, became inevitable the moment we were brought to admit that the phe- nomena of society constitute but a specialized division of the phenomena of psychical life. Nevertheless it would be a grave error to in- fer, from this necessary coincidence in develop- ment, that a community is nothing more than a kind of organism, as Plato imagined in his " Republic," and Hobbes in his " Leviathan." When we go so far as to compare the metrop- olis of a community to the heart of an organ- ism, its roads to blood vessels, its circulating COSMIC PHILOSOPHY commodities to circulating nutritive materials, its money to blood corpuscles, its channels for transmitting intelligence to nerve axes, and the individuals of which it is composed to physio- logic units ; we are instituting a series of analo- gies, which are no doubt of considerable value in the study both of history and of political economy. In his essay on the "Social Organ- ism," Mr. Spencer has traced a great number of such analogies, which are no less instructive than curious, but they are after all analogies and not homologies. So when M. Littre points out that the study of political economy stands in the same relation to the science of sociology as the study of the nutritive functions to the science of biology, he reveals an analogy of great philo- sophical value. But we nevertheless feel that there is a wide distinction between an organism and a community, which it would be absurd to ignore; and Hobbes's conception of society as a vast Leviathan strikes us as grotesque. This insuperable distinction is the fact that in a community the psychical life is all in the parts, while in an organism the psychical life is all in the whole. The living units of society " do not and cannot lose individual conscious- ness,'* while " the community as a whole has no corporate consciousness." " The corporate life must here be subservient to the lives of the parts, instead of the lives of the parts being 33^ ILLUSTRATIONS AND CRITICISMS subservient to the corporate life." ^ The his- torical induction at the close of the preceding chapter showed us that such has been the case. While during the advance toward greater het- erogeneity and coherence, the original lines of demarcation between communities have been ever becoming effaced as the communities have become integrated into higher and higher aggre- gates, we saw that as a part of the very same process the individualities of the members of society have been ever increasing in definiteness and ever acquiring a wider scope for activity. And we saw that this process not only has ever gone on, but must continue to go on ; since, by the law of use and disuse, the sympathetic or social feelings must continue to grow at the expense of the selfish or anti-social feelings ; and since this slow emotional modification, which makes possible the higher integration of society, en- sures also the higher individuation of its mem- bers. " Progress, therefore, is not an accident, but a necessity. Instead of civilization being artificial, it is a part of nature ; all of a piece with the development of the embryo or the un- folding of a flower. The modifications man- kind have undergone, and are still undergoing, result from a law underlying the whole organic creation ; and provided the human race con- 1 Spencer's Essays, zd series, p. 154. [Library Edition, vol. i. pp. 176, 177.] 333 COSMIC PHILOSOPHY tinues, and the constitution of things remains the same, those modifications must end in com- pleteness/*^ As surely as the astronomer can predict the future state of the heavens, the so- ciologist can foresee that the process of adap- tation must go on until in a remote future it comes to an end in proximate equilibrium. The increasing interdependence of human interests must eventually go far to realize the dream of the philosophic poet — of a Parliament of Man . a Federation of the World, '* When the kindly earth shall slumber, lapt in universal law/* and when the desires of each individual shall be in proximate equilibrium with the means of sat- isfying them and with the simultaneous desires of all surrounding individuals. Such a state im- plies at once the highest possible individuation and the highest possible integration among the units of the community ; and it is the ideal goal of intellectual and moral progress. Thus the fundamental law of progress, as for- mulated at the close of the last chapter, contains all the provisions requisite in such a formula. It describes, in a single grand generalization, all the phenomena of social evolution, both in so far as they result from the general laws of life, and in so far as they result from the operation of circumstances peculiar to the aggregation of ^ Spencer, Social Statics^ p. 65. 334 ILLUSTRATIONS AND CRITICISMS intelligent organisms in a community. And it includes and justifies all the minor generaliza- tions which may be reached by a direct induc- tion from historical phenomena solely. This law of progress we find to be exceed- ingly abstract — it expresses a general truth quite completely disengaged from the incidents of particular cases. Such, as we were led to an- ticipate, must be the character of a law which generalizes a vast number of complex pheno- mena. A formula which is to include in one expression phenomena so different as the rise of Christianity and the invention of the steam- engine must needs be eminently abstract. To attempt to make it concrete, so as to appeal directly to the historical imagination, would be to deprive it of its universality, to increase its power of expressing some one set of phenomena by rendering it powerless to express some other equally important set. This consideration ex- plains the manifest failure of all the attempts which have been made to determine the general law of progress by a simple historical induction. Take, for example, the two crude generaliza- tions which pretty nearly sum up the philoso- phy of history as it is contained in the work of Mr. Buckle, — that "scepticism " is uniformly favourable to progress, while the " protective spirit " (or, the spirit of over-legislation) is uni- formly detrimental to it. These, in the first 335 COSMIC PHILOSOPHY place, are generalizations drawn from a peculiar and temporary phase of society and illegitimately extended to all phases of society ; and, in the second place, even so far as they go, they have but a limited applicability — expressing at best certain aspects of intellectual and industrial pro- gress, but leaving quite out of sight that slow moral evolution which underlies the whole. Whatever of truth is contained in these state- ments is also contained in the formula which I am here expounding, and is much more accu- rately expressed in the terms of that formula. Scepticism, for instance, in the best sense of the word, is the attitude of mind which is caused by the perception that certain inner psychical rela- tions — say, a given set of beliefs or institutions — have ceased to be adapted to outer relations. The mediaeval conception of the world, as pre- sented in Dante's treatise on " The Monarchy," was very closely adapted both to the knowledge and to the social needs of the time. The concep- tion of man as the centre of a universe made solely for his use and behoof, with a sun to give him light by day and a moon and stars to give him. light by night, with an Emperor and a Pope divinely appointed to rule him in this life, and an Autocrat in heaven uniting in himself the functions of these two, and ruling nature accord- ing to his arbitrary will ; this conception, I say, was in harmony both with the best science and 32>^ ILLUSTRATIONS AND CRITICISMS with the most urgent social requirements of the time, and the fact of its long duration shows how profound was the harmony. While this state of things lasted, there was but little room for scepticism. But after a while the psychical environment had so far altered as to be out of balance with this conception of the world. The Copernican revolution unseated Man from his throne in the centre of the universe, and ad- vancing physical generalization cast discredit upon the theory of providential government, and so arose the long line of " infidels '* from Bruno and Vanini to Voltaire and Diderot. While, on the other hand, the increasing power of monarchy, especially in France, gradually un- dermined the moral independence of the Papacy, converting it from an upholder of equity and a friend of the people into an unscrupulous ally of regal usurpation and iniquity ; and thus arose the Great Schism, followed by the Protestant revolt, and the grand democratic movement which culminated in the French Revolution. Now what is all this infidel rebellion against dogma and democratic rebellion against author- ity but the intellectual and moral turbulence caused by the growing conviction that the psy- chical relations comprised in the authorized con- ception of the world were out of balance with the new aggregate of relations formed by the discoveries of science and the altered require- VOL. Ill 337 COSMIC PHILOSOPHY ments of social existence ? And this painful attitude of the mind, prompting men to fresh investigation of the order of nature and to new social rearrangements, is the stimulus to a new and closer adaptation. Such is the function of scepticism in the community, and such also is its function in the individual. A person, for instance, is educated in an environment of Presbyterian theology, accepting without question all the doctrines of Calvinism. By and by his environment enlarges. Facts in science or in history, methods of in- duction, canons of criticism present themselves to his mind as things irreconcilable with his old creed. Hence painful doubt, entailing efforts to escape by modifying the creed to suit new mental exigencies. Hence eager study and fur- ther enlargement of the environment, causing fresh disturbance of equilibrium and renewed doubt resulting in further adaptation. And so the process continues — until, if the person in question be sufficiently earnest and suffi- ciently fortunate, the environment enlarges so far as to comprehend the most advanced science of the day ; and the process of adaptation goes on until an approximate equilibrium is attained between the order of conceptions and the order of phenomena, — and scepticism, having dis- charged its function, exists no longer, save in so far as it may be said to survive in the in- 33^ ILLUSTRATIONS AND CRITICISMS grained habit of weighing evidence and testing one's hypotheses. Now to say that scepticism is one of the causes of progress is to make a historical induc- tion which is valuable as far as it goes ; but it is at best an empirical generalization. To make it a scientific law, we need to express the func- tion of scepticism in terms of some formula which covers all the phenomena of progress. And who does not see that in so expressing it we are obtaining a far more definite and accurate and serviceable notion than when we merely state vaguely that scepticism is a cause of pro- gress ? Just so with the statement that the protective spirit is a hindrance to progress. By the collo- quial phrase ** protective spirit," Mr. Buckle means the control, or at least the undue con- trol, of the community over its individual mem- bers. Now in estimating the effect of this cir- cumstance upon progress, everything depends upon the precise amount of such control which we are to regard as excessive. But this varies with each epoch of civilization. What would now be intolerable despotism was once needful restraint. You cannot have a constitutional democracy of Vandals or Moguls. So long as men's altruistic feelings are not powerful enough to make them spontaneously respect the claims of their fellows, the only force which can make 339 COSMIC PHILOSOPHY society hold together is that hero worship which enjoins impHcit obedience to the head of the tribe or state. But as we have already seen, the steady growth of altruism at the expense of egoism, which renders possible a more com- plete social aggregation, renders possible also a more complete development of individual lib- erty. So that what in one age is a needful con- trol exercised by the community over its mem- bers becomes in the next age an undue control. All this is expressed in the law of progress, as here formulated ; but it is not expressed, with any approach to accuracy, in the crude state- ment that the protective spirit is an obstacle to civilization. Indeed the longer we study this general for- mula, the more we shall be convinced that it includes and justifies all sound inductions which can be derived from a survey of historical phe- nomena. As we apply it to the facts of history one after another, we shall see more clearly that its very abstractness is its excellence, and that the initial difficulty in thoroughly realizing its import arises from its very fulness of meaning. And we shall become ever more deeply im- pressed with the belief that no amount of mere historic induction can give us a universally ap- plicable law of social progress, unless our results be deductively interpreted as corollaries from the general laws of life. 340 ILLUSTRATIONS AND CRITICISMS We are now in a position to examine the claims of Comte to be regarded as the founder of sociology. And first let us note that a law of social progress answering so many require- ments as are met by the law above expounded could not have been obtained earlier than the present generation or even than the present decade. To conceive of sociogeny as a specialized branch of psychogeny, itself a specialized branch of biogeny, was not possible until a general sci- ence of genesis had been at least partially insti- tuted. The very idea of a science of genesis as applied to organic phenomena was not elabo- rated until the appearance of Von Baer's great treatise in 1829. And the conception was then altogether too novel to be worked into the web of philosophy which Comte was weaving. Con- sidering how, throughout the latter part of his life, he steadfastly refrained from the study of contemporary scientific literature, I do not think it likely that Comte ever became aware of the growing prominence of this conception of gen- esis ; and if he had become aware of it he would doubtless have scornfully repudiated it, as he repudiated almost every new conception which was distinctly in advance of the limited scientific knowledge of 1830. The knowledge which Comte was not prepared to utilize at that date, he was certainly not in a condition to util- 341 COSMIC PHILOSOPHY ize at any later period of his life. It was in 1857, the year of Comte's death, that Mr. Spen- cer, in an essay entitled " Progress : its Law and Cause," first definitely extended the law of organic development to historic phenomena ; although he had ever since 1851 been visibly working toward that result, and had in 1855 reached that grand generalization of the devel- opment of both life and intelligence, regarded as processes of adjustment, which underlies the law of social progress here expounded. It was this splendid series of researches, culminating in the announcement of the universal law of evolution, in 1861, which supplied a new basis for all the sciences which treat of genesis, and rendered possible the discovery of the special laws of sociogeny. And finally, in 1861, the further clew to these special laws was given by Sir Henry Maine, whose immortal treatise on ** Ancient Law " threw an entirely new light upon the primitive structure of society, and demonstrated — what before could only have been surmised — that human society, as earli- est organized, consisted of a congeries of tribal communities, by the integration of which have arisen the various orders of states and federa- tions known to history. When, therefore, we inquire whether Comte did or did not create a science of sociology, we need not be surprised if it appears that he did 342 ILLUSTRATIONS AND CRITICISMS not create such a science. For in sociology, even more than in any other science, the prime requisite is to formulate the law of evolution — in this case, the order of sequence of historic events from epoch to epoch. So far as a science of society could be founded upon purely statical considerations, the work had already been per- formed— by Adam Smith, as regards political economy, by Bentham, as regards jurisprudence, and by both these great thinkers, as regards ethics. But ethics, jurisprudence, and political economy, put together, do not make up a sci- ence of society, as Comte clearly saw. For in sociology the historical element — the question whence we started and whither we are bound — is the element which takes precedence of all others. Even ethics, jurisprudence, and politi- cal economy cannot be placed upon a truly ra- tional basis until we understand the order of intellectual and moral change from epoch to epoch. To understand the " tendencies of the age " Is an indispensable prerequisite for sound sociological thinking as well as for sound polit- ical acting. Thus that portion of sociology which treats of genesis Is, relatively to the whole sci- ence, even more important than the correspond- ing portions of biology and psychology. In bio- logy pure and simple, we can, as we have seen, obtain a tolerably complete notion of the order of changes in the organism, with but occasional 343 COSxMIC PHILOSOPHY reference to the comparatively stable and un- changing environment. In psychology we have to take the environment into account at every step ; but unless we are studying the quite spe- cial problem of the growth of the mental facul- ties, we do not need to refer to a definite and persistent succession of changes in the environ- ment. But in sociology we cannot work in this way. As M. Littre has well pointed out, when we come to study humanity we are met by a new phenomenon unknown in biology or in psychology pure and simple. That new phe- nomenon is Tradition, or the bequeathing of all its organized intellectual and moral experience by each generation to its successor. Here for the first time we have an environment which is rapidly changing in a definite order of sequence, and changing by the very activity of the com- munity itself. The organized experience of each generation becomes a part of the environ- ment of its successor, and since in each succes- sive age " the empire of the dead over the liv- ing increases," the environment of each genera- tion consists to a greater and greater extent of the sum total of traditions bequeathed by all past generations. Hence we cannot hope sci- entifically to comprehend the simplest feature in any given state of the community without reference to ancestral states. The religious phe- nomena of the present day, for example, cannot 344 ILLUSTRATIONS AND CRITICISMS be understood without previous knowledge of the whole history of Christianity, and indeed of hu- man speculative thought since men began to be aware of the universe about them. Our political organization can be scientifically interpreted only as the offspring of ancestral political organiza- tions in a series reaching back to the primitive tribal community.^ And so with all the aspects of society. Whether we are studying a creed, a code of laws, a dialect, a system of philosophy, a congeries of myths, or a set of manners and customs, we can arrive at the rational solution of our problem only through a historical in- quiry. Hence the doctrine of genesis, indispen- sable as it is in the other two organic sciences, becomes, if one may say so, even more indis- pensable in sociology. Here the whole science rests upon sociogeny,and until we have reached a scientific conception of progress we cannot stir a step. Thus, in addition to the unparalleled com- plexity of its phenomena, and to its general dependence both for doctrine and for method upon the simpler sciences, we perceive still an- other reason why the science of sociology has been the last to be constituted. Resting as it does upon the law of progress, it has had to 1 See Mr. Freeman's book. Comparative Politics, — the work of a great scholar who inherits the gift of Midas, and makes gold of every subject that he touches. 345 COSMIC PHILOSOPHY wait not only until the preceding sciences were founded, but until they were sufficiently ad- vanced to supply it with the general formula of organic development, from which alone the law of social progress could be deduced. It was not enough that Bichat had laid the foundations for a general theory of nutrition, reproduction, and innervation, or that James Mill had estab- lished the fundamental laws of association — though this was indeed much. The new sci- ence had to wait until Von Baer had traced the order in which organisms develop, until Mr. Darwin had shown how through heredity and natural selection organisms become adapted to their environments, and until Mr. Spencer had shown how associated ideas and emotions are slowly generated and modified in conformity to surrounding circumstances. All this, of course, could not be foreseen by Comte. But he nevertheless clearly saw-^-and it does honour to his philosophic acumen — that a comprehensive theory of social changes can be obtained only by studying them in the order of their historical dependence. He saw that the laws of sociology are at bottom the laws of history. And especially, from the prac- tical point of view, he saw that no general the- ory fit to serve as a basis for the amelioration of society could be deduced from mere abstract reasonings about human nature, or obtained in- 346 ILLUSTRATIONS AND CRITICISMS ductively from the mere observation of contem- porary social phenomena. All theories formed in this way, without reference to the order of historic progression, are in danger of being stated too absolutely, and are wont to give birth only to Utopian projects. Comte was never weary of pointing out the errors of those polit- ical economists who deduce general laws of ac- cumulation and distribution from the industrial phenomena presented by a single country at a particular epoch ; or of those moralists who base their theories upon that absurdest of aphorisms, that " human nature is always and everywhere the same ; " or of those legislators who, in igno- rance of the fact that humanity is travelling in a definite and partially ascertainable direction, fondly hope to turn it hither and thither by shrewdly concocted acts of parliament. Nor, in maintaining this last position, did he ever fall into the opposite error, — characteristic of super- ficial writers like Macaulay and Buckle, — that individual genius and exertion is of little or no account in modifying the course of history. He did not forget that history is made by individual men, as much as a coral reef is made by indi- vidual polyps. Each contributes his infinites- imal share of effort ; nor is the share of effort always so trifling. Considering the course of history merely as the resultant of the play of moral forces, is there not in a Julius Caesar or 347 COSMIC PHILOSOPHY a Themistokles as large a manifestation of the forces which go to make history as in thousands of common men ? Nevertheless the fact re- mains that civilization runs in a definite path, that the sum total of ideas and feelings domi- nant in the next generation will be the offspring of the sum total of ideas and feelings dominant in this, and that only by understanding the gen- eral course of the movement of humanity can we hope to make our volitions count for much as an item in the resulting aggregate of effects. Holding such views as these, Comtesaw that the first aim of the sociological inquirer must be to ascertain the law of progress. And accord- ingly he set himself to work to perform this task, with the only instrument then at his com- mand, — that of historical induction. I have already remarked upon his wonderful skill in the use of that instrument of research. I doubt if any one has ever lived who had a keener sense of the significance of historic events, so far as such significance could be perceived without the aid of conceptions furnished by the sciences of organic development. The fifth volume of the " Philosophic Positive " is certainly a marvel- lous tableau of the progress of society. I know of no concrete presentation of universal history which can be compared with it. The general excellence of the conception is matched by the excellence of the execution even to the smallest 348 ILLUSTRATIONS AND CRITICISMS details. And amid the host of pregnant sugges- tions concerning Greek and Roman, and espe- cially concerning mediaeval history, the great fact that there has been and is a determinate order of sequence in human affairs is placed quite beyond cavil on the highest plane of inductive demonstration. To achieve so much as this was to show that a science of sociology is possible, and to prepare the way very thoroughly for the creation of such a science. But Comte professed to have done more than this. He regarded himself as the founder of sociology, and is so regarded by his disciples. It is part of our business to de- termine, if we can, whether the claim is a valid one ; and in order to do this, we must examine the theorems which Comte propounded as the fundamental laws of progress. These theorems are two in number, — the first relating to the intellectual, the second to what we may call the material, development of mankind. The first is an old acquaintance, be- ing nothing else than the generalization that all human conceptions must pass through three stages — the theological, the metaphysical, and the positive. We have already (Part I., chapter vii.) examined this theory upon its own merits. Tried by a psychological analysis, we have found it to be only partially true. We saw it to be correct in so far as it asserts that the prevailing 349 COSMIC PHILOSOPHY conception of the world becomes less and less anthropomorphic from age to age ; but incorrect in so far that it asserts that in this deanthro- pomorphizing process there are three radically distinguishable stages, and also, in so far as it asserts that the process must end in Positivism. We saw that, although without doubt men be- gan by seeing volition everywhere and must end by seeing an inscrutable Power everywhere, nevertheless the mental process has throughout been one and the same, and any appearance of definite stages can be only superficial. Never- theless, between the primeval savage who prays to his fetish and the modern philosopher who recognizes that he must shape his conduct ac- cording to invariable laws or pay the penalty in some form of inevitable suffering, the differ- ence in mental attitude is so vast that we may well have a distinction in terms to correspond to it. It is for this reason that I have frequently contrasted Anthropomorphism and Cosmism as the initial and final terms of a continuous pro- gression. This, however, is not the Comtean doctrine. Again, metaphysics, as Comte under- stands it, being merely imperfect scientific in- quiry conducted by the aid of the subjective method bequeathed by anthropomorphism, can- not be regarded as the peculiar possession of any particular stage. But while Comte's theorem, in spite of these 3S^ ILLUSTRATIONS AND CRITICISMS radical defects, contains a germ of truth and has been found to be eminently useful as a formula for intellectual development, I cannot but be surprised that Comte should have regarded it as the fundamental law of social progress, and still more that such able writers as Mr. Mill and Mr. Lewes should at the present day be found countenancing such an opinion. Does this " law " explain how it was that Greek civi- lization prematurely failed ? Does it throw any light upon the causal connection between Ro- man universal dominion and the Christian senti- ment of the brotherhood of men ? Does it re- cognize the distinction between the growth of a community in size and its growth in structure, or hint to us that the differences between Chi- nese and European civilization may be summed up in the statement that China is only a stu- pendous tribal community, while Romanized Europe is virtually a federation of exceedingly heterogeneous national aggregates ? And while, as we shall presently see, it unconsciously re- cognizes that intellectual development is a con- tinuous process of adaptation, does it say any- thing about that slow process of emotional change by which the more harmonious coopera- tion of societies and the more perfect freedom of individuals are alike rendered possible ? In- deed it says nothing about any of these things ; and I must think that these are very extensive 35^ COSMIC PHILOSOPHY lacunae in a theorem which professes to be the fundamental law of social progress. But this formula, as it stands, is not the whole of Comte*s fundamental law of history. With the advance from theological, through metaphysical, to positive conceptions of the world, Comte couples an advance from military to industrial life, through an ill-defined inter- mediate stage — inserted, doubtless, to complete the threefold parallelism — which he calls the " legal " stage. Thoroughly to explain what he means by this " legal *' stage of society would require more detail than I can here well indulge in. We must be content with observing that he means to designate that epoch, which indeed we have not yet left behind us, in which parliamen- tary legislation is thought competent to renovate society artificially, — in which it is supposed that legislatures can make men rich by giving them paper money, intellectual by patronizing literature, temperate by closing dram-shops. As this phase of opinion was very conspicuous in the eighteenth century, coupled with metaphy- sical systems of political ethics deduced from revolutionary theories of the " inherent rights of man," Comte links this whole set of doctrines together, and makes a so-called metaphysico- legal stage in social progress. But I cannot think this a happy generalization. This " legal '* stage is, at the best, a phase of intellectual de- 2S'^ ILLUSTRATIONS AND CRITICISMS velopment, and to introduce it into the midst of a purely social progress from military to in- dustrial life, seems too much like committing the logical fallacy known as cross-division. Omit- ting this stage, then, and reducing Comte's double formula to its lowest terms, — the only ones, I think, upon which he himself would in- variably have insisted, — we have the following, as the Comtean law of progress : — The progress of society is a gradual change from anthropomorphic to positive conceptions of the worlds and from military to industrial modes of life ; and the latter kind of change is determined by the former. Such is the form of statement most favour- able for Comte, and at the same time I believe it to be the one which best represents his per- manent opinion. We shall presently see that the generalization of the change from military to industrial modes of life is one of great value, and it is to the thorough elaboration of it that much of the merit of Comte's social philosophy is due. But I must first call attention to the fatal defect in the above formula, the defect which destroys its claim to be regarded as the law of progress. That fatal defect is its total omission of moral feeling as a factor in social evolution. Though he is far from committing Mr. Buckle's absurdity of denying that there has been any improvement in moral feeUng, VOL. Ill 2SZ COSMIC PHILOSOPHY Comte nevertheless falls into substantially the same error with Mr. Buckle, in attempting to explain all social progress as due simply to a progressive alteration of opinion. The error is one which seems to be shared by two other eminent writers, — Mr. Mill and Mr. Lewes. Here are the statements of the four : Mr. Mill says, " We are justified in concluding that the order of human progression in all respects will mainly depend on the order of progression in the intellectual convictions of mankind." ^ Mr. Lewes says, somewhat more vaguely, " The evolutions of Humanity correspond with the evolutions of Thought." ^ Mr. Buckle says, " The progress of mankind depends on the success with which the laws of phenomena are investigated, and on the extent to which a know- ledge of those laws is diffused." ^ Comte says, "It is not to the readers of this work that I think it necessary to prove that ideas govern the world, and that the social mechanism re- poses ultimately upon opinions." * Now it is not so much because of what these propositions assert as because of what they omit, that they must be pronounced unsatisfac- tory and misleading. It is beyond question that ^ System of Logic y 4th edition, vol. ii. p. 517. 2 Philosophy of the Sciences y p. 23. * History of Civilization y vol. ii. p. i . * Philosophie Positivey torn. i. p. 48. 354 ILLUSTRATIONS AND CRITICISMS the progress of mankind does depend upon the progressive conformity of the order of their conceptions to the order of phenomena ; but, after the inquiry contained in the preceding chapter, I believe no further proof is necessary to convince us that the progress of mankind also depends upon the progressive conformity of their desires to the requirements arising from their aggregation in communities. If civilization is a process of intellectual adaptation, it is also a process of moral adaptation ; and the latter I believe to be the more fundamental of the two. The case is well stated by Mr. Spencer, in the following passage : " Ideas do not govern the world ; the world is governed by feelings, to which ideas serve only as guides. The social mechanism does not rest finally upon opinions ; but almost wholly upon character. . . . All so- cial phenomena are produced by the totality of human emotions and beliefs : of which the emo- tions are mainly predetermined, while the be- liefs are mainly post-determined. Men's desires are chiefly inherited ; but their beliefs are chiefly acquired, and depend on surrounding condi- tions ; and the most important surrounding conditions depend on the social state which the prevalent desires have produced. The social state at any time existing is the resultant of all the ambitions, self-interests, fears, reverences, indignations, sympathies, etc., of ancestral citi- 355 COSMIC PHILOSOPHY zens and existing citizens. The ideas current in this social state must on the average be con- gruous with the feeUngs of citizens ; and there- fore, on the average, with the social state these feelings have produced. Ideas wholly foreign to this social state cannot be evolved, and, if introduced from without, cannot get accepted — or, if accepted, die out when the temporary phase of feeling which caused their acceptance ends." This statement, I may observe in pass- ing, is well illustrated by the abortive attempts of missionaries to civilize the lower races of mankind by converting them to Christianity. Though they sometimes succeed in procuring temporary verbal acceptance for Christian ideas, they almost always fail in effecting a genesis of Christian feeling, and such civilization as they are able to produce is apt to be both superficial and transient. This is simply because civiliza- tion is not a mere process of external acquire- ment, but is a process of slow adaptation or breeding, which requires many generations to effect a permanent modification of character. The Fiji, whose language contains no words expressive of the higher emotions or the more exalted principles of action, cannot be made into a Christian. You may cover him with a very little of the external varnish of civilization ; you may astonish him into accepting a few for- mulas, to him quite unintelligible, concerning 3S^ ILLUSTRATIONS AND CRITICISMS the relations of man to his Creator ; but after all he remains a savage still, in feelings and in habits of thought, bloodthirsty, treacherous, and superstitious, with a keen appetite for human flesh. Or suppose you could resuscitate a me- diaeval baron — one of those innumerable free- booters who lived entrenched in the romantic castles of the Rhine and levied blackmail on every luckless wayfarer — suppose you could resuscitate such a man, and were to endeavour to expound to him in the simplest language a few of the most self-evident modern axioms concerning political rights and the interdepend- ence of human interests : would he understand you ? By no means. So vast would be the dif- ference in mental habit, that in all probability he could not even argue with you. " Hence " — to continue with Mr. Spencer — "though advanced ideas when once established act upon society and aid its further advance ; yet the es- tablishment of such ideas depends on the fitness of the society for receiving them. Practically, the popular character and the social state deter- mine what ideas shall be current ; instead of the current ideas determining the social state and the character. The modification of men's moral natures, caused by the continuous disci- pline of social life, is therefore the chief proxi- mate cause of social progress." It is worthy of note that Comte, in his later 357 COSMIC PHILOSOPHY period, comes partly around to this very point of view. At the beginning of the " Politique Positive," we find him announcing that the in- creasing tendency in the altruistic impulses to prevail over the egoistic impulses is the best measure by which to judge of the progress of society.^ Yet the unsteadiness with which he grasped this principle is revealed by the some- what misty statement, a few pages further on, that " the coordination of human nature as a whole depends ultimately upon the coordination of intellectual conceptions." A similar fluctua- tion in opinion may be noticed in Mr. Buckle; and it was indeed hardly possible for the func- tion of moral feeling as a factor of progress to be thoroughly understood by writers unac- quainted with the laws of adaptation upon which the scientific interpretation of that function is based. But whatever Comte's latest opinions may have been, since he never formulated any law to include the action of moral feeling as a factor of progress, his claims to be regarded as the founder of sociology must rest entirely upon his theory of progress as announced and elabo- rately illustrated in the " Philosophic Positive." That theory, as we now see, is much too in- complete to serve as the foundation for a scien- tific study of history. Civilization cannot be summed up in the correct formula that men's 1 Politique Positive y torn. i. p. i6. 358 ILLUSTRATIONS AND CRITICISMS occupations begin by being military and end by being industrial, or in the incorrect formula that men's conceptions of the world begin by being anthropomorphic and end by being positive ; nor is it true that the former change is deter- mined by the latter. We need to add the for- mula that men's feelings begin by being almost purely egoistic and must end by being altruistic to a considerably greater extent than will suffice to prevent individual interests from clashing. And even with all three formulas before us, we need something more before we can say that we have obtained the Law of Progress. These formulas are historical generalizations of great value ; but as thus announced, they are too iso- lated with respect to each other. The progress of society is not moral progress, or intellectual progress, or material progress ; but it is the combination of all the three. Our three for- mulas, therefore, must be integrated in a single formula. And this is done, and satisfactorily done, when it is shown that they are all involved in that law of adaptation or adjustment which underlies sociology, as well as psychology and biology. That the progress from egoism to altruism is involved in that fundamental law was proved in the preceding chapter, and has been illustrated throughout the whole of this discussion. But the law of adaptation equally involves the pro- 359 COSMIC PHILOSOPHY gress from Anthropomorphism, not to Positiv- ism, but to Cosmism, as a necessary corollary. For what does that progress depend upon ? What is the underlying process of which it is the necessary symptom and result ? Why is it that men begin by investing the unknown causes of phenomena with quasi-human attributes and end by recognizing a single Cause which is in- scrutable ? In treating of deanthropomorphiza- tion (Part I., chapter vii.) we examined this point. We perceived the primitive anthropomorphism to be a corollary from the relativity of all know- ledge. We saw that, to interpret phenomena at all, men must interpret them in terms of their own consciousness. We saw that before the dawn of science, when events seemed isolated and capricious, the phenomenon itself was by a natural inference — which only the progress of science has taught us to correct — endowed with a quasi-human personality. We traced the man- ner in which, as phenomena become generalized in wider and wider groups, the causes of phe- nomena become conceived as more and more abstract, and become stripped by slow degrees of their anthropomorphic vestments. Until finally, when generalization has proceeded to such an extent as to give us a single grand science of Cosmology, dealing with the Universe as an integral whole, there comes to be recognized a single Cause of phenomena, which, as being in- 360 ILLUSTRATIONS AND CRITICISMS finite, cannot be in any anthropomorphic sense personal, and which, as being absolute, must be inscrutable. Thus we see that Comte's formula is not fundamental, even as a formula for intellectual development. The process of deanthropomor- phization is not the fundamental fact. The con- tinuous organization of knowledge and general- ization of phenomena is the fundamental fact, of which the continuous deanthropomorphiza- tion is the necessary symptom and result. Now in Part I., chapter ii., we traced the outlines of this continuous organization of knowledge ; and we found that the advance from incomplete to complete knowledge consists in the continuous establishment of groups of notions which are ever more coherent within themselves, while they are ever more clearly demarcated from one another. Now what is all this but a continuous process of differentiation and integration ? When we say that from first to last, from the simplest cog- nitions of infancy to the widest generalizations of science, we cognize phenomena invariably through difference and likeness, we mean that we are continually differentiating notions an- swering to unlike phenomena and continually integrating notions answering to like pheno- mena. Or, to express the same thing in other words, we are continually establishing relations of likeness and unlikeness among our concep- 361 COSMIC PHILOSOPHY tions, that in some way or other definitely cor- respond to relations of likeness and unlikeness among phenomena. Thus our intellectual pro- gress is at bottom a process of adaptation. And when treating of the Test of Truth (Part I., chap- ter iii.), it was shown that Truth, the goal of in- tellectual progress, is nothing else than the com- plete adaptation of the order of conceptions to the order of phenomena, — the establishment of inner relations that are in equilibrium with outer relations. Thus we obtain a veritable law of intellectual progress — whereas to say that men's conceptions pass from Anthropo- morphism to Positivism is merely to enunciate an empirical generalization, which, besides being empirical, is also radically imperfect. The gradual change from a military to an in- dustrial life must also seek its rational explana- tion in the law of progress as above formulated. The diminution of warfare and the concomitant increase of devotion to industrial pursuits are en- tailed by the growth of communities in size and structure. Among the primitive tribal societies there is no industrial life save that implied in hunting and fishing, and at a somewhat later date in the rearing of domestic animals. Settled agricultural pursuits require \ a greater power of continuous application and a more devel- oped ability to subordinate present enjoyment to the anticipation of future needs than is to be 362 ILLUSTRATIONS AND CRITICISMS found in the primitive savage. It is only the mental habit produced by long-continued social discipline which enables us to work to-day that we may enjoy the fruits of our labour at a dis- tant period. The primeval tribe wanders from spot to spot, seeking ever a better hunting- ground or richer pasturage, leading a predatory life which differs in little save in its family or- ganization from that led by the lower animals. In this stage of society constant warfare is in- evitable, since each tribe must fight or be crushed out of existence by neighbouring tribes. Over a large part of the earth's surface, such has been the monotonous career of savage man from the earliest times until the present day. Such ap- pears to have been, in its main features, the ancient history of our own country before its conquest by Europeans, as it. is admirably de- lineated in the writings of that acute observer Mr. Parkman. The exigencies of warfare, however, of them- selves facilitate that integration of tribal com- munities which we have seen to be the indis- pensable condition of progress. A considerable step toward civilization is taken when tribes be- gin to aggregate for mutual defence over a wide tract of country. When America was discovered, an aggregation of this sort had apparently be- gun to be formed among the Iroquois; and such was the highest organization reached by 3^3 b COSMIC PHILOSOPHY the ancient Turanian tribes of Central Asia. A far more important step is taken when war- fare ceases to be purely destructive and becomes acquisitive ; or, in other words, when the vic- tors, instead of massacring the vanquished, be- gin to make slaves of them. By this step agri- cultural industry is fairly brought into existence, and the tribal confederacy becomes fixed in location and enabled to increase indefinitely in size at the expense of the less highly organized communities in the neighbourhood. Under these conditions the tribal confederacy may grow until it takes on the semblance of an "ag- gregate of the third order," as in China,^ or in ancient Egypt, Assyria, Media, Lydia, and Per- sia. I am expressing something more than an analogy — I am describing a real homology as far as concerns the process of development — when I say that these communities simulated 1 *« In every respect the Chinese constitution of society may be regarded as a gigantic amplification of the constitution of the family. The family is no doubt the constituent element of which all societies are composed ; just as, in the body, all tissues, nervous or muscular, are generated from the primitive cellular tissue ; but whereas in other societies we find dif- ferentiation into classes and institutions which have no direct analogue in the family, in China we find far less of this, far more of adherence to the primitive social tissue, to the patri- archal type. On this type the village and the empire are alike moulded." Bridges, in Essays on International Polity, p. 401. 364 ILLUSTRATIONS AND CRITICISMS modern European nations much In the same way that a tree-fern of the carboniferous period simulated the exogenous trees of the present time. The vast growth and the considerable civilization obtained by such communities were rendered possible only through the institution of industrial slavery in place of the primeval in- discriminate slaughter of captives. Only through enforced labour did the continuous culture of the soil and the consequent stability of society become possible ; a point which Comte clearly saw, and has brilliantly illustrated. Thus we see how the exigencies of self-pro- tection entailed by the primitive state of uni- versal warfare furnished of themselves the con- ditions for the rise of industry. We need not trace in detail the slow growth of the industrial spirit at the expense of the military spirit in the ancient civic communities, in the ancient and mediaeval Empire, and in modern times. That has been done, with a masterly hand, by Comte. We may only note briefly how indus- try — the offspring of slavery, itself the oflF- spring of warfare — has all along, by aiding the differentiation and integration of society, been draining the vitality out of its primeval parent. Let us note, then, that the kind of differentiation, known as " division of labour," by rendering the various portions of the community more and more dependent on each other, renders a state of 365 COSMIC PHILOSOPHY warfare ever less easy to sustain, and therefore continually, though slowly, diminishes the fre- quency and shortens the continuance of wars. The statement that in early times a community is, on the whole, better able to endure protracted warfare than in later times, may be illustrated by a comparison between the Punic Wars of Rome and the War of Secession in our own country. The horrible destruction of life and property occasioned by the first and second Punic Wars is minutely described in Mommsen's " Roman History." The first of these desperate strug- gles lasted twenty-three years, during the five severest of which the census of Roman patri- cians was diminished by one sixth of the whole number, — a fact terrible to contemplate when its full significance is realized. After twenty- three years of comparative quiet began the still more deadly struggle against Hannibal, which lasted seventeen years. During this war the total loss of life in all the communities engaged — Italian, Spanish, Sicilian, and African — can- not be estimated at less than 600,000 persons actually slain ; a Iqss which I believe somewhat exceeds that of the Northern and Southern States in the American war. But to make a fair comparison, we must include the circumstance that the population of these ancient communi- ties was not more than one sixth as great as the population of the United States ; and that in 366 ILLUSTRATIONS AND CRITICISMS ancient times the normal rate of increase of population was very much slower than in such a community as ours. The second Punic War was, therefore, relatively as murderous as our Civil War would have been had it continued until between three and four million lives were destroyed. And if we would appreciate the direct damage to industry which it entailed, we have a sufficient datum in the fact that during those seventeen years more than four hundred flourishing towns and villages in Italy alone were blotted out of existence.^ Now opinions may difl^er as to the possibility of our carrying on for seventeen years a war which should drain our resources as the Hanni- balic war drained the resources of Italy. Prob- ably no country could so well sustain such a trial as the United States, owing to the favour- ableness of our social conditions for exceedingly rapid growth in wealth and population. Never- theless, even omitting foreign interference from the account, I do not believe the thing would be possible. I believe it perfectly safe to assert that a war like the one we have lately passed through would, if prolonged to seventeen years, entail social disintegration throughout the com- munity. Yet the absolute military power of the United States is incomparably greater than that ^ Mommsen, Romische Geschichtey torn. i. p. 671 ; see also p. 536. COSMIC PHILOSOPHY of ancient Rome ; wherein, then, lies the differ- ence ? The explanation will be found, and the par- ticular conclusion reinforced, when we consider the enormous increase of heterogeneity and in- terdependence in the modern as contrasted with the ancient community. In ancient Italy there was but little division of labour, — it required but a few simple occupations to supply the wants of the whole community. In the United States considered as a whole, the division of labour is perhaps not quite so extreme as in western Europe, owing to the sparseness of population and the purely agricultural activ- ity of large sections of the country : still, the industrial differentiation is very great, and to supply the wants of each portion of the com- munity a vast number of mutually dependent and highly complicated occupations is indis- pensably necessary. Obviously the heterogene- ous community cannot so well bear the abstrac- tion of units from its mutually dependent parts, as the homogeneous community could bear the abstraction of units from its relatively independ- ent and self-sufficing parts. The difference is much the same as the difference between cutting off portions of a worm and cutting off portions of a vertebrate animal. You may take one of the lower worms and slice away at it for some time without destroying it, but in the case of 368 ILLUSTRATIONS AND CRITICISMS the vertebrate a comparatively small loss of parts entails destruction. In society the prin- ciple is the same. The Romans could lose army after army, while the few who remained at home could carry on all the agricultural and commercial operations necessary to the main- tenance of the community. There were no great organized industries, manufacturing or commercial, so linked together that the destruc- tion of any one might cause general financial disaster. But in any large modern community industry has become so heterogeneous that it is difficult for one part to take on the functions of another part, and so completely integrated that a sudden and considerable withdrawal of men from the ordinary pursuits of life can hardly take place without causing widespread suffering. And the contrast is made still greater by the industrial federation of modern commu- nities as compared with the industrial isolation of ancient states. Though the time has per- haps never been, since Mediterranean civiliza- tion began, when a war could continue very long in one community without tending to set up disturbance in some other, yet this interac- tion of different states was far less conspicuous in ancient than it is in modern times. The Hannibalic war might go on for seventeen years, and Athens or Alexandria not be much the worse off for it. But before the war of secession VOL. Ill 3^9 COSMIC PHILOSOPHY had continued twelve months, the consequent suffering in Lancashire was manifesting itself in riots, and England for a time seemed willing at all hazards to interfere and check the contest. This single example — out of hundreds that might be taken — must suffice to illustrate the way in which the ever-increasing interdepend- ence of human interests, itself both the cause and the effect of industrial progress, is ever making warfare less and less endurable. To this it must be added that both moral and in- tellectual factors contribute to bring about the general result. As human interests in various parts of the world become more and more inex- tricably wrought together, and as communities which lie apart from each other come ever into closer contact, the ancient antagonisms of senti- ment between them slowly disappear, and inter- national friendship grows at the expense of the old hostility or distrust. Thus the moral adap- tation due to long-continued social discipline diminishes the warlike feelings and strength- ens the feelings which maintain an industrial regime ; while on the other hand, intellectual adaptation, ever adding new complication to industry, arrays the opinion of society more and more decidedly against war, as against an in- tolerable source of disturbance. Besides which, the very heterogeneity of the military art, the increasing complication both of the implements 370 ILLUSTRATIONS AND CRITICISMS and of the methods of warfare, due to scientific and industrial progress, renders war ever more costly, and makes the community less willing to engage in it. And these cooperating pro- cesses must go on until — probably at no very distant period — warfare shall have become ex- tinct in all the civilized portions of the globe. In so far as the present chapter has dealt with the claims of Comte to be regarded as the founder of Sociology, I believe it is sufficiently proved that these claims cannot be sustained, though in many ways he did more than any one else to prepare the way for such an achievement. If a man can ever be properly said to create or found a science, it is only when he discovers some fundamental principle which underlies the phenomena with which the science has to deal, and which thus serves to organize into a co- herent ratiocinative body of knowledge that which has hitherto been an incoherent empirical body of knowledge. It was in this way that Newton may be said to have created a science of celestial dynamics, and that Bichat is some- times, and more loosely, said to have been the founder of modern biology. In no such sense can Comte be said to have created sociology. Standing on the vantage ground of contempo- rary science, which enables us to discern in out- line the law of progress, we can see not only that Comte was far from detecting that law, but 371 COSMIC PHILOSOPHY that, with the limited appliances at his com- mand, he could not have been expected to dis- cover it. Nevertheless his contributions to sociology were exceedingly brilliant and valu- able, and he did perhaps all that the greatest thinker could have done forty years ago. He arrived at a double generalization of the phe- nomena of intellectual and material progress, as wide as could then be reached by unaided his- torical induction ; and he verified this double generalization by an elaborate survey of ancient and modern history, which, even had he written nothing else, would alone suffice to make his name immortal. It entitles him, I think, to be ranked first among those sociologists who have proceeded solely on the historical method, — on a somewhat higher plane, perhaps, than Vico or Montesquieu, Turgot or Condorcet. That generalization, in both its branches, and in so far as it is correct, we have here seen to be a corollary from the fundamental law of social evolution obtained in the preceding chapter. We have seen that the continuous adaptation, both moral and intellectual, of the community to its environment, involves, as necessary con- comitants, both the progressive deanthropomor- phization of men's conceptions of Cause, and the gradual change from military to industrial habits of life. And the harmony between the results thus obtained by pursuing two wholly 372 ILLUSTRATIONS AND CRITICISMS independent lines of inquiry adds fresh support both to the fundamental law and to its historic corollaries. In the very act of proving that Comte did not achieve the whole, we do but place what he did achieve upon a deeper and firmer basis. END OF VOLUME III Electrotyped and printed by H. O. Houghton &» Co, Cambridge t Mass., U.S. A.