Good breeding in cattle depends on physical health, but in men on a well-formed character.

Hope of ill gain is the beginning of loss.

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

More men have become great through practice than by nature.

The brave man is not only he who overcomes the enemy, but he who is stronger than pleasures. Some men are masters of cities, but are enslaved to women.

One should practice much sense, not much learning.

By convention sweet is sweet, by convention bitter is bitter, by convention hot is hot, by convention cold is cold, by convention color is color. But in reality there are atoms and the void. That is, the objects of sense are supposed to be real and it is customary to regard them as such, but in truth they are not. Only the atoms and the void are real.