What beauty is, I know not, though it adheres to many things.

I hold that the perfection of form and beauty is contained in the sum of all men.

As I grew older, I realized that it was much better to insist on the genuine forms of nature, for simplicity is the greatest adornment of art.

The artist is chosen by God to fulfill his commands and must never be overwhelmed by public opinion.

And since geometry is the right foundation of all painting, I have decided to teach its rudiments and principles to all youngsters eager for art.

My father suffered much and toiled painfully all his life, for he had no resources other than the proceeds of his trade from which to support himself and his wife and family.