Sometimes I imagine colors as if they were living ideas, being of pure reason with which to communicate. Nature is not on the surface, it is deep down.
Treat nature by the cylinder, the sphere, the cone, everything in proper perspective so that each side of an object or a plane is directed towards a central point.
Michelangelo is a constructor, and Rafael an artist who, great as he is, is always limited by the model. When he tries to be thoughtful he falls below the niveau of his great rival.
