It has become a standing reproach upon Plato's treatment of poetry in the Republic that he forgets or misrepresents in the tenth book what he said in the third.According to the earlier discussion, poetry is required to perform important services in the ideal state; its subject-matter will make the young familiar with true doctrines (376 sqq.); its style will reflect the qualities proper to the character of guardian, and therefore—by the principle of imitation—induce and confirm such qualities in the souls of young and old (392c sqq.). Poetry, like all other forms of art, must train the young to love and resemble the beauty of truth (τῷ καλῷ λόγῳ, 401d), so that when reason develops, they will recognize it as an old friend (402).