Nothing exists except atoms and empty space; everything else is opinion.

Our sins are more easily remembered than our good deeds.

I would rather discover one scientific fact than become King of Persia.

Tis hard to fight with anger, but the prudent man keeps it under control.

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

Men should strive to think much and know little.

Either men will learn to live like brothers, or they will die like beasts.