Life unexamined, is not worth living.

Sweet exists by convention, bitter by convention, color by convention; but in reality atoms and the void alone exist

To a wise and good man the whole earth is his fatherland.

According to convention there is a sweet and a bitter, a hot and a cold, and according to convention, there is an order. In truth, there are atoms and a void.

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

The man who is fortunate in his choice of son-in-law gains a son; the man unfortunate in his choice loses his daughter also.

Soul and intellect are just the same things.