The writings of the Marquis de Sade (1740-1814) present a libertine philosophy of sexual excess and human suffering that refuses to make any concession to law, religion, or public decency. In this groundbreaking cultural history, Alyce Mahon traces how artists of the twentieth century turned to Sade to explore political, sexual, and psychological terror, adapting his imagery of the excessively sexual and terrorized body as a means of liberation from systems of power. Mahon shows how avant-garde artists, writers, dramatists, and filmmakers drew on Sade's "philosophy in the bedroom" to challenge oppressive regimes and their restrictive codes and conventions of gender and sexuality. She provides close analyses of early illustrated editions of Sade's works and looks at drawings, paintings, and photographs by leading surrealists such as André Masson, Leonor Fini, and Man Ray. She explains how Sade's ideas were reflected in the writings of Guillaume Apollinaire and the fiction of Anne Desclos, who wrote her erotic novel, Story of O, as a love letter to critic Jean Paulhan, an admirer of Sade. Mahon explores how Sade influenced the happenings of Jean-Jacques Lebel, the theater of Peter Brook, the cinema of Pier Paolo Pasolini, and the multimedia art of Paul Chan. She also discusses responses to Sade by feminist theorists such as Simone de Beauvoir, Susan Sontag, and Angela Carter.