Love shows itself more in adversity than in prosperity; as light does, which shines most where the place is darkest.

Truth was the only daughter of Time.

What is fair in men, passes away, but not so in art

The painter who has no doubt about his own ability will attain very little.

Instrumental or mechanical science is the noblest and above all others, the most useful.

This work should commence with the conception of man, and should describe the nature of the womb, and how the child inhabits it, and in what stage it dwells there, and the manner of its quickening and feeding, and its growth, and what interval there is between one stage of growth and another, and what thing drives it forth from the body of the mother, and for what reason it sometimes emerges from the belly of its mother before the due time.

After painting comes Sculpture, a very noble art, but one that does not in the execution require the same supreme ingenuity as the art of painting, since in two most important and difficult particulars, in foreshortening and in light and shade, for which the painter has to invent a process, sculpture is helped by nature. Moreover, Sculpture does not imitate color which the painter takes pains to attune so that the shadows accompany the lights.