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.

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

Raising children is an uncertain thing; success is reached only after a life of battle and worry.

Happiness resides not in possessions, and not in gold, happiness dwells in the soul.

No power and no treasure can outweigh the extension of our knowledge.

Magnanimity consists in enduring tactlessness with mildness.

The sweetest things become the most bitter by excess.