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

The art of procreation and the members employed therein are so repulsive, that if it were not for the beauty of the faces and the adornments of the actors and the pent-up impulse, nature would lose the human species.

Vows begin when hope dies.

I'm not contented to capture the world. I want to change it.

Sculptured figures which appear in motion, will, in their standing position, actually look as if they were falling forward.

Those who become enamoured of the art, without having previously applied to the diligent study of the scientific part of it, may be compared to mariners who put to the sea in a ship without rudder or compass and therefore cannot be certain of arriving at the wished for port.

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