Democritus

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

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

Good means not merely not to do wrong, but rather not to desire to do wrong.

Our sins are more easily remembered than our good deeds.

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

Throw moderation to the winds, and the greatest pleasures bring the greatest pains.

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

I would rather discover one true cause than gain the kingdom of Persia.

If thou suffer injustice, console thyself; the true unhappiness is in doing it.

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