We come into the world alone and we die alone. Why, in life, should we be any less alone?

Let us not unlearn what we have already learned

I am not an Athenian or a Greek, but a citizen of the world.

Calumny is only the noise of madmen.

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

A friend is one soul abiding in two bodies.

On being asked by someone how he could become famous, Diogenes responded: 'By worrying as little as possible about fame