Do not breed. Nothing gives less pleasure than childbearing. Pregnancies are damaging to health, spoil the figure, wither the charms, and it's the cloud of uncertainty forever hanging over these events that darkens a husband's mood.

Happiness lies only in that which excites, and the only thing that excites is crime.

For mortal men there is but one hell, and that is the folly and wickedness and spite of his fellows; but once his life is over, there's an end to it: his annihilation is final and entire, of him nothing survives.

The primary and most beautiful of nature's qualities is motion

Don't have children: they deform women's bodies and turn into an enemy 20 years later.

Consider the problem from the point of view of evil, evil being almost always pleasure's true and major charm; considered thus, the crime must appear greater when perpetrated upon a being of your identical sort than when inflicted upon one which is not, and this once established, the delight automatically doubles.

Never lose sight of the fact that all human felicity lies in man's imagination, and that he cannot think to attain it unless he heeds all his caprices. The most fortunate of persons is he who has the most means to satisfy his vagaries.