Since each artist is a person different to all other persons, the varieties of motive and point of view are infinite. There is no end to the variety; and, as you grow older, and continue your study of pictures, you will find more and more interest in looking into and discovering just what is the particular motive and point of view of each artist. For he cannot help betraying them in his pictures, any more than you can help betraying yours, if, being a partisan of Yale, you are watching a football game between Yale and Harvard. Just as your behavior will betray your feelings, so is a picture the expression of an artist’s personal likes and dislikes. In studying pictures, therefore, you are also studying the personality of the men who painted them.