178 LANGUAGE AND MENTAL DEVELOPMENT OF CHILDREN Through the discussion of the qualities disclosed in the use of each fresh term that comes to be employed, a great deal of social as well as intellectual enlightenment can be ensured. As already emphasized, the child should be trained to ask himself in be- coming aware of a fresh word or phrase which has appealed to him, "What should I have said (or what have I been in the habit of saying) instead?5' Then he should go on to inquire what exactly is the difference in meaning between the old word and the new one. Certainly it would seem that those children who remain unable, after such training, to advance beyond the realm of the nice, the kind, and the good must be considered to be maturing all too slowly. 6. KNOWLEDGE BY ACQUAINTANCE AND KNOWLEDGE BY DESCRIPTION To set children to write about other children whom they know well is to find abundant evidence of their unreadiness below the age of thirteen for the study of the motives and purposes of adults whose minds are so much more mature and complex. The categories employed by the average child below the age of thirteen in his description of his acquaintances will depend to a large extent, of course, upon the nature of his environment. He will tend to think largely in terms of those qualities which he sees to be desirable but not general in the community life he shares. Thus, in a rather poor social group, children make frequent reference to such qualities, and their opposites, as cleanliness, tidiness, good manners, obedience, and industry. In an environment where mosf*of the good qualities mentioned can be taken for granted there is reference instead to.honesty, truthfulness, reliability, and trustworthiness, and their opposites. But in all groups cheerfulness, good temper, generosity, kindness, and helpfulness are naturally and widely valued. We may, perhaps, mention in passing that boys appear to have greater use than girls for the quality of being a good sport, and also' to find it often necessary to mention shyness and bashfulness. In so far as the great characters of history and literature can be faithfully represented in the terms set out above, they can no doubt be made to come alive for children and exercise a strong .appeal to their interests. But we may observe that much which is typical of the condugt *pf the great must lie beyond the descriptive limits imposed by such a vocabulary. If reduced to explaining what we mean by ambition, honour, imagination, Moteion, pride, piety, and so forth, in such familiar words .as oan be understood by the immature child we shall be uujifcefy