Virtues are dangerous as vices insofar as they are allowed to rule over one as authorities and not as qualities one develops oneself.

Most thinkers write badly, because they communicate not only their thoughts, but also the thinking of them.

And many such good inventions are there, that they are like woman's breasts: useful at the same time, and pleasant.

Whoever has overthrown an existing law of custom has always first been accounted a bad man: but when, as did happen, the law could not afterwards be reinstated and this fact was accepted, the predicate gradually changed; - history treats almost exclusively of these bad men who subsequently became good men!

What do I care about the purring of one who cannot love, like the cat?

Epicurus had rage and envy of Plato's superior style.

We possess art lest we perish of the truth.