Donatien Alphonse François, Marquis de Sade (2 June 1740 -- 2 December 1814) was a French aristocrat, revolutionary politician, philosopher, and writer famous for his libertine sexuality and lifestyle. His works include novels, short stories, plays, dialogues, and political tracts; in his lifetime some were published under his own name, while others appeared anonymously and Sade denied being their author. He is best known for his erotic works, which combined philosophical discourse with pornography, depicting sexual fantasies with an emphasis on violence and criminality.