The soul takes nothing with her to the other world but her education and culture; and these, it is said, are of the greatest service or of the greatest injury to the dead man, at the very beginning of his journey hither.

Your dog is your only philosopher.

If there is no contradictory impression, there is nothing to awaken reflection

Those who practice philosophy in the right way are in training for dying and they fear death least of all men.

The highest form of pure thought is in mathematics.

Wisest is he who knows what he does not know.

If the head and the body are to be well, you must begin by curing the soul.