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.

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

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

Nature holds the beautiful, for the artist who has the insight to extract it. Thus, beauty lies even in humble, perhaps ugly things, and the ideal, which bypasses or improves on nature, may not be truly beautiful in the end.

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. . .

Love and delight are better teachers than compulsion.