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.

Antisthenes used to say that envious people were devoured by their own disposition, just as iron is by rust.

Fortune is unstable, while our will is free.

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

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

Anarcharsis, on learning that the sides of a ship were four fingers thick, said that "the passengers were just that distance from death.

Diogenes said once to a person who was showing him a dial, "It is a very useful thing to save a man from being too late for supper.