Diogenes, when asked from what country he came, replied, "I am a citizen of the world."

Diogenes lighted a candle in the daytime, and went round saying, "I am looking for a man.

The mountains too, at a distance, appear airy masses and smooth, but seen near at hand they are rough.

When asked what learning was the most necessary, he said, “Not to unlearn what you have learned!”

Anaxagoras said to a man who was grieving because he was dying in a foreign land, "The descent to Hades is the same from every place.

Bias used to say that men ought to calculate life both as if they were fated to live a long and a short time, and that they ought to love one another as if at a future time they would come to hate one another; for that most men were bad.

Bury me on my face," said Diogenes; and when he was asked why, he replied, "Because in a little while everything will be turned upside down.