Evil is... a moral entity and not a created one, an eternal and not a perishable entity: it existed before the world; it constituted the monstrous, the execrable being who was also to fashion such a hideous world. It will hence exist after the creatures which people this world

In an age that is utterly corrupt, the best policy is to do as others do.

Happiness is an abstraction, it is a product of the imagination, it is a way of being moved, which depends entirely on our way of seeing and feeling.

It is not my mode of thought that has caused my misfortunes, but the mode of thought of others.

The degradation which characterizes the state into which you plunge him by punishing him pleases, amuses, and delights him. Deep down he enjoys having gone so far as to deserve being treated in such a way.

If it is the dirty element that gives pleasure to the act of lust, then the dirtier it is, the more pleasurable it is bound to be.

Imperious, choleric, irascible, extreme in everything, with a dissolute imagination the like of which has never been seen, atheistic to the point of fanaticism, there you have me in a nutshell, and kill me again or take me as I am, for I shall not change.