Cato used to assert that wise men profited more by fools than fools by wise men; for that wise men avoided the faults of fools, but that fools would not imitate the good examples of wise men.

Democritus said, words are but the shadows of actions.

Man is neither by birth nor disposition a savage, nor of unsocial habits, but only becomes so by indulging in vices contrary to his nature.

Had I a careful and pleasant companion that should show me my angry face in a glass, I should not at all take it ill; to behold man's self so unnaturally disguised and dishonored will conduce not a little to the impeachment of anger.

... being perpetually charmed by his familiar siren, that is, by his geometry, he neglected to eat and drink and took no care of his person; that he was often carried by force to the baths, and when there he would trace geometrical figures in the ashes of the fire, and with his finger draws lines upon his body when it was anointed with oil, being in a state of great ecstasy and divinely possessed by his science.

Music, to create harmony, must investigate discord.

Distressed valor challenges great respect, even from an enemy.