"Philosophy in the Bedroom" (La Philosophie dans le boudoir) is a libertine novel written by the Marquis de Sade, a French writer known for his controversial and explicit works. The novel was first published in 1795. The story of "Philosophy in the Bedroom" is set in a bedroom, where a wealthy libertine named Dolmancé instructs Eugénie, a young and innocent girl, in the ways of libertinism...