For a wrongdoer to be undetected is difficult; and for him to have confidence that his concealment will continue is impossible.

Riches do not exhilarate us so much with their possession as they torment us with their loss.

There are infinite worlds both like and unlike this world of ours. For the atoms being infinite in number... are borne on far out into space.

The term "incorporeal" is properly applied only to the void, which cannot act or be acted on. Since the soul can act and be acted upon, it is corporeal.

If you wish to make Pythocles rich, do not add to his store of money, but subtract from his desires.

Pleasure is the first good. It is the beginning of every choice and every aversion. It is the absence of pain in the body and of troubles in the soul.

He who understands the limits of life knows that it is easy to obtain that which removes the pain of want and makes the whole of life complete and perfect. Thus he has no longer any need of things which involve struggle.