If a man devotes himself to art, much evil is avoided that happens otherwise if one is idle.

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. . .

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

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

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.

Why has God given me such magnificent talent? It is a curse as well as a great blessing.

If a man devotes himself to art, much evil is avoided that happens otherwise if one is idle.