Now as to what this course of study should be there cannot be any question; there never has been any question. All the sensible people of all ages are agreed upon it. And it is not literature, nor is it any other art, nor is it history, nor is it any science. It is the study of one's self. Man, know thyself. These words are so hackneyed that verily I blush to write them. Yet they must be written, for they need to be
