Art is embedded in nature and they who can extract it, have it.

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. . .

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.

No single man can be taken as a model for a perfect figure, for no man lives on earth who is endowed with the whole of beauty.

Art is embedded in nature and they who can extract it, have it.

Sane judgment abhors nothing so much as a picture perpetrated with no technical knowledge, although with plenty of care and diligence.

Some think that they know everybody, but they really don't know themselves.