Play is a necessary ingredient in art because there is a kind of wonder that goes on when you play. You're directing your activity toward a conclusion that isn't prescribed by a particular method.
When desire, having rejected reason and overpowered judgment which leads to right, is set in the direction of the pleasure which beauty can inspire, and when again under the influence of its kindred desires it is moved with violent motion towards the beauty of corporeal forms, it acquires a surname from this very violent motion, and is called love.