Observe how, out of the countless things which he knows, the poet has chosen those which he feels akin to his faith in the immortality of love. The painter would not, if he could, reproduce all the elements of a face, but only those that are expressive of the interpretation of character he wishes to convey. The novelist and the dramatist proceed in a like selective fashion in the treatment of their material. In the lives of men there are a thousand actions and events--casual spoken words, recurrent processes such as eating and dressing, hours of idleness and futility which, because repetitious, habitual, or inconsequential, throw no light upon that alone in which we are interested,--character and fortune. To describe a single example of these facts suffices. In the novel and drama, therefore, the personalities and life histories of men have a simplicity and singleness of direction not found in reality. The artist seeks everywhere the traits that individualize and characterize, and neglects all others. Moreover, since the aim of art is to afford pleasure in the intuition of life, the artist will try to reveal the hidden unities that so delight the mind to discover. He will aim to penetrate beneath the surface of experience observed by common perception, to its more obscure logic underneath. In this way he will go beyond what the mere mechanism of imitation requires. The poet, for example, manifests latent emotional harmonies among the most widely sundered things. The subtle novelist shows how single elements of character, apparently isolated acts or trivial incidents, are fateful of consequences. He discloses the minute reactions of one personality upon another. Or he enters into the soul of man himself, into his private and individual selfhood, and uncovers the hidden connections between thought and feeling and impulse. Finally, he may take the wider sweep of society and tradition into view and track out their part in the molding of man and his fate. In the search for unity, the artist is on common ground with the man of science; but with this difference: the artist is concerned with laws operating in concrete, individual things in which he is interested; while the scientist formulates them in the abstract. For the artist, unity is valuable as characterizing a significant individual; for the scientist, it is valuable in itself, and the individual only as an example of it.