It is very rarely granted even to Nature herself to produce anything absolutely perfect in every part.

Painting is possessed of divine power, for not only does it make the absent present, but also makes the dead almost alive.

A man can do all things if he will.

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

When I investigate and when I discover that the forces of the heavens and the planets are within ourselves, then truly I seem to be living among the gods.

Errors accumulate in the sketch and compound in the model.

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.