The more brilliant the lightning, the quicker it disappears.

In God alone, essence (what He is) and existence (that he is) coincide.

The world is divided into men who have wit and no religion and men who have religion and no wit.

As to the mental essence, we find it in infants devoid of every mental form.

When you do not know the nature of the malady, leave it to nature; do not strive to hasten matters. For either nature will bring about the cure or it will itself reveal clearly what the malady really is.

Those who deny the first principle should be flogged or burned until they admit that it is not the same thing to be burned and not burned, or whipped and not whipped.

Pain is a sensation produced by something contrary to the course of nature and this sensation is set up by one of two circumstances: either a very sudden change of the temperament (or the bad effect of a contrary temperament) or a solution of continuity.