Everything proceeds from everything else and everything becomes everything, and everything can be turned into everything else.

A good painter has two main objects to paint, man and the intention of his soul.

Art is the queen of all sciences communicating knowledge to all the generations of the world.

Supreme happiness will be the greatest cause of misery, and the perfection of wisdom the occassion of folly.

How painting surpasses all human works by reason of the subtle possibilities which it contains.

Those who are in love with practice without knowledge are like the sailor who gets into a ship without rudder or compass and who never can be certain whether he is going. Practice must always be founded on sound theory, and to this Perspective is the guide and the gateway; and without this nothing can be done well in the matter of drawing.

Good writing comes from good talent.