Behold, my love, behold all that I simultaneously do: scandal, seduction, bad example, incest, adultery, sodomy! Oh, Satan! one and unique God of my soul, inspire thou in me something yet more, present further perversions to my smoking heart, and then shalt thou see how I shall plunge myself into them all!

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.

The debility to which Nature condemned women incontestably proves that her design is for man, who then more than ever enjoys his strength, to exercise it in all the violent forms that suit him best, by means of tortures, if he be so inclined, or worse.

Thread of their days without pity, and in the midst of life, without ever concerning themselves with this fatal moment, living as though they were to exist for ever, they disappear into the obscure cloud of immortality, uncertain of the fate which lies in store for them.

In libertinage, nothing is frightful, because everything libertinage suggests is also a natural inspiration; the most extraordinary, the most bizarre acts, those which most arrantly seem to conflict with every law, every human institution... even those that are not frightful, and there is not one amongst them all that cannot be demonstrated within the boundaries of nature.

The mechanism that directs government cannot be virtuous, because it is impossible to thwart every crime, to protect oneself from every criminal without being criminal too; that which directs corrupt mankind must be corrupt itself; and it will never be by means of virtue, virtue being inert and passive, that you will maintain control over vice, which is ever active: the governor must be more energetic than the governed.

The ultimate triumph of philosophy would be to cast light upon the mysterious ways in which Providence moves to achieve the designs it has for man.