It is better to imitate ancient than modern work.

Painting is concerned with the ten things you can see: these are darkness and brightness, substance and color, form and place, remoteness and nearness, movement and rest.

Never make heads straight on the shoulders, but turn them aside to the right or to the left, even though they look down, or upward, or straight ahead, because it is necessary for them to look lively and awake and not asleep. And do not depict the front or rear half of the whole person so that too much straightness is displaced, one half above or below the other half; and if you should wish to use stiff figures, do so only in portraying old people.

Every now and then go away, have a little relaxation, for when you come back to your work your judgment will be surer.

Nature varies the seed according to the variety of the things she desires to produce in the world.

Many have made a trade of delusions and false miracles, deceiving the stupid multitudes.

Nothing can be loved or hated unless it is first known.