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.

Certain souls seem hard because they are capable of strong feelings, and they sometimes go to rather extreme lengths; their apparent unconcern and cruelty are but ways, known only to themselves, of feeling more strongly than others.

What does one want when one is engaged in the sexual act? That everything around you give you its utter attention, think only of you, care only for you...every man wants to be a tyrant when he fornicates.

Humane sentiments are baseless, mad, and improper; they are incredibly feeble; never do they withstand the gainsaying passions, never do they resist bare necessity.

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

Get it into your head once and for all, my simple and very fainthearted fellow, that what fools call humanness is nothing but a weakness born of fear and egoism; that this chimerical virtue, enslaving only weak men, is unknown to those whose character is formed by stoicism, courage, and philosophy.

Let not your zeal to share your principles entice you beyond your borders.