Plato had no systematic philosophy of Art, and his views had to be collected from scattered references. Aristotle likewise has scarcely a system, though his opinions are more connected, and though he devoted a special tretise, the "Poetics", to the subject. And this {326} book, which has come down to us in a fragmentary condition, deals exclusively with poetry, and even in poetry only the drama is considered in detail. What we have from Aristotle on the subject of aesthetics may be divided roughly into two classes, firstly, reflections on the nature and significance of art in general, and, secondly, a more detailed application of these principles to the art of poetry. We shall deal with these two classes of opinions in that order. In order to know what art is, we must first know what it is not. It must be distinguished from kindred activities. And firstly, it is distinguished from morality in that morality is concerned with action, art with production. Morality consists in the activity itself, art in that which the activity produces. Hence the state of mind of the actor, his motives, feelings, etc., are important in morality, for they are part of the act itself. But they are not important in art, the only essential being that the work of art should turn out well, however it has been produced. Secondly, art is distinguished from the activity of nature, which it in many respects resembles. Organic beings reproduce their own kind, and, in the fact that it is concerned with production, generation resembles art. But in generation, the living being produces only itself. The plant produces a plant, man begets man. But the artist produces something quite other than himself, a poem, a picture, a statue.