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

Either kill me or take me as I am, because I'll be damned if I ever change.

My manner of thinking, so you say, cannot be approved. Do you suppose I care? A poor fool indeed is he who adopts a manner of thinking for others!

We monsters are necessary to nature also.

Are your convictions so fragile that mine cannot stand in opposition to them? Is your God so illusory that the presence of my Devil reveals his insufficiency?

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.

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.