In the previous chapters we talked about the elements of composition. We found that the composition or arrangement of figures and objects in the picture is designed by artists for two purposes: Firstly, to represent some subject; and, secondly, to represent it in such a way that the arrangement itself will be a source of pleasure. This second purpose is what makes the picture a work of art. And we found that the artist, in order to make his composition give pleasure to our sense of sight, relies upon the pleasure that we derive from repetition and contrast, and upon the instinct that we all have for keeping our balance. The elements of composition, in fact, are repetition and contrast in a state of balance, sometimes with the added charm of rhythm. We also found that one way in which artists contrive to make this balance of repetition and contrast is by playing, as we may say, upon the simple geometrical patterns of the rectangle, triangle, and circle.