I am a citizen of the world.

It is not that I am mad, it is only that my head is different from yours.

It is the privilege of the gods to want nothing, and of godlike men to want little.

A philosopher named Aristippus, who had quite willingly sucked up to Dionysus and won himself a spot at his court, saw Diogenes cooking lentils for a meal. "If you would only learn to compliment Dionysus, you wouldn't have to live on lentils."

Diogenes replied, "But if you would only learn to live on lentils, you wouldn't have to flatter Dionysus.

Dogs and philosophers do the greatest good and get the fewest rewards.

Of what use is a philosopher who doesn't hurt anybody's feelings?