Just as you ought not to attempt to cure eyes without head or head without body, so you should not treat body without soul.

When the debate is lost, slander becomes the tool of the loser.

When you want wisdom and insight as badly as you want to breathe, it is then you shall have it.

Envy is the ulcer of the soul.

Nobody knows anything, but I, knowing nothing, am the smartest man in the world.

I was afraid that by observing objects with my eyes and trying to comprehend them with each of my other senses I might blind my soul altogether.

Every pleasure or pain has a sort of rivet with which it fastens the soul to the body and pins it down and makes it corporeal, accepting as true whatever the body certifies.