I am the most travelled of all my contemporaries; I have extended my field of enquiry wider than anybody else, I have seen more countries and climes, and have heard more speeches of learned men. No one has surpassed me in the composition of lines, according to demonstration, not even the Egyptian knotters of ropes, or geometers.

The wise man’s home is the universe.

Magnanimity consists in enduring tactlessness with mildness.

The man enslaved to wealth can never be honest.

To a wise and good man the whole earth is his fatherland.

Hope of ill gain is the beginning of loss.

We think there is color, we think there is sweet, we think there is bitter, but in reality there are atoms and a void.