Beauty is the adjustment of all parts proportionately so that one cannot add or subtract or change without impairing the harmony of the whole.

Painting contains a divine force which not only makes absent men present, as friendship is said to do, but moreover makes the dead seem almost alive.

The function of the painter is to render... the visible surface so that at a certain distance... and position it appears... like the body itself.

A man can do all things if he will.

What is painting but the act of embracing, by means of art, the surface of the pool?

Nothing overshadows truth so much as authority.

A common error of ignorance is to maintain that what one does not know does not exist.