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 44 self-expression, of natural growth, are appealed to almost as if they meant that opportunity for any kind of spontaneous activity inevitably secures the due training of mental power; or a mythological brain physiology is appealed to as proof that any exercise of the muscles trains power of thought.

While we vibrate from one of these extremes to the other, the most scrious of all problems is ignored: the problem, namely, of discovering and arranging the forms of activity (a) which are most congenial, best adapted, to the immature stage of development; (b) which have the most ulterior promise as preparation for the social responsibilities of adult life; and (c) which, at the same time, have the maximum of influence in forming habits of acute observation and of consecutive inference. As curiosity is related to the acquisition of material of thought, as suggestion is related to flexibility and force of thought, so the ordering of activities, not themselves primarily intellectual, is related to the forming of intellectual powers of consecutiveness.