The greater the man's soul, the deeper he loves.

King of the animals — as thou hast described him — I should rather say king of the beasts, thou being the greatest — because thou hast spared slaying them, in order that they may give thee their children for the benefit of the gullet, of which thou hast attempted to make a sepulchre for all animals; and I would say still more, if it were allowed me to speak the entire truth.

You do ill if you praise, but worse if you censure, what you do not understand.

A good painter is to paint two main things, men and the working of man's mind.

My body will not be a tomb for other creatures.

Putting your hand into a river, you simultaneously touch the last of what is passing and the first of what is coming.

A bird is an instrument working according to mathematical law, which instrument it is within the capacity of man to reproduce with all its movements, but not with a corresponding degree of strength, though it is deficient only in the power of maintaining equilibrium. We may therefore say that such an instrument constructed by man is lacking in nothing except the life of the bird, and this life must needs be supplied from that of man.