First Principles 323 real than an illusion which is so strong, so persistent and so universal; this contention, indeed, cannot be disputed except at the cost of invalidating the reality of all even our most assured convictions. They admit that there is an apparent connection between their ego and non-ego, their necessity and free-will, their luck and cunning ; they grant that the difference is resolvable into a difference of degree and not of kind; but, on the other hand, they say that in each degree there still lurks a little kind, and that a differ- ence of many degrees makes a difference of kind—there being, in fact, no difference between differences of degree and those of kind, except that the second are an accumulation of the first. The all-powerfulness of the surroundings is declared by them to be as completely an illusion, if examined closely, as the power of the individual was declared to be by their opponents, inasmuch as the antecedents of the non-ego, when examined by them, prove to be not less due to the personal individual element everywhere recognisable, than the ego, when examined by their opponents, proved to be mergeable in the universal. They claim, therefore, to be able to resolve everything into spontaneity and free-will with no less logical consistency than that with which free- will can be resolved into an outcome of necessity. Two Incomprehensibles You may assume life of some kind omnipresent for ever throughout matter. This is one way. Another way is to assume an act of spontaneous generation, i.e. a transition somewhere and somewhen from absolutely non-living to absolutely living. You cannot have it both ways. But it seems to me that you must have it both ways. You must not begin with life (or potential life) everywhere alone, nor must you begin with a single spontaneous generation alone, but you must carry your spontaneous generation (or denial of the continuity of life) down, ad infmitum, just as you must carry your continuity of life (or denial of spontaneous generation) down ad infinitum and, compatible or incom- patible, you must write a scientific Athanasian Creed to comprehend these two incomprehensibles. If, then, it is only an escape from one incomprehensible