Philosophy in the Bedroom is an erotic book by the Marquis de Sade written in the form of a dramatic dialogue. Though initially considered a work of pornography, the book has come to be considered a socio-political drama. Set in a bedroom, the two lead characters make the argument that the only moral system that reinforces the recent political revolution is libertinism, and that if the people of France fail to adopt the libertine philosophy, France will be destined to return to a monarchic state. In the introduction, the Marquis de Sade exhorts his readers to indulge in the various activities in the play. He says that the work is dedicated to “voluptuaries of all ages, of every sex” and urges readers to emulate the characters. “Lewd women”, he writes, “let the voluptuous Saint-Ange be your model; after her example, be heedless of all that contradicts pleasure's divine laws, by which all her life she was enchained.”