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Rh types, to hold them lightly, to modify them gladly. We tend, also, to realize more and more clearly when our ideas started, where they started, how they came to us, why we accepted them. All useful history is antiseptic in this fashion. It enables us to know what fairy tale, what school book, what tradition, what novel, play, picture, phrase, planted one preconception in this mind, another in that mind.

Those who wish to censor art do not at least underestimate this influence. They generally misunderstand it, and almost always they are absurdly bent on preventing other people from discovering anything not sanctioned by them. But at any rate, like Plato in his argument about the poets, they feel vaguely that the types acquired through fiction tend to be imposed on reality. Thus there can be little doubt that the moving picture is steadily building up imagery which is then evoked by the words people read in their newspapers. In the whole experience of the race there has been no aid to visualization comparable to the cinema. If a Florentine wished to visualize the saints, he could go to the frescoes in his church, where he might see a vision of saints standardized for his time by Giotto. If an Athenian wished to visualize the gods he went to the temples. But the number of objects which were pictured was not great. And in the East, where the spirit of the second commandment was widely accepted, the portraiture of concrete things was even more meager, and for that reason perhaps the faculty of practical