Marquis de Sade (1740-1814) was a French libertine writer, playwright, and philosopher. His work was characterized by pornography and moral contempt. The name Sade gave rise to the term sadism, which refers to the scenes of cruelty and torture described in his books. The full name of Marquis de Sade was Donatien Alphonse François de Sade. He was born in the palace of La Coste, in Paris, France, on June 2, 1740. The book "The 120 Days of Sodom" is the author's most important work, and his name has come to qualify all kinds of perversion and cruelty.