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

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

Do not trust all men, but trust men of worth; the former course is silly, the latter a mark of prudence.

Men should strive to think much and know little.

Everything existing in the universe is the fruit of chance and necessity.

Hope of ill gain is the beginning of loss.