Demócrito

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

The pride of youth is in strength and beauty; the pride of old age is in discretion.

Word is a shadow of a deed.

By convention there is colour, by convention sweetness, by convention bitterness, but in reality there are atoms and space.

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

It is godlike ever to think on something beautiful and on something new.

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

Hope of ill gain is the beginning of loss.

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

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

It is better to destroy one's own errors than those of others.

Men should strive to think much and know little.

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

By desiring little, a poor man makes himself rich.

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

Our sins are more easily remembered than our good deeds.

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.

It is greed to do all the talking but not to want to listen at all.

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