Philosophy in the Bedroom () is a 1795 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 chapter titled "Fifth Dialogue", there is a lengthy section where the character Chevalier reads a philosophical pamphlet titled "Frenchmen, Some More Effort If You Wish To Become Republicans". The pamphlet clearly represents Sade's philosophy on religion and morality, a philosophy he passionately hopes the citizens of France will embrace and codify into the laws of their new republican government. Continually throughout the work, Sade makes the argument that one must embrace atheism, reject society's beliefs about pleasure and pain, and further makes his argument that if any crime is committed while seeking pleasure, it cannot be condemned. Characters Eugénie, a 15-year-old girl who at the beginning of the dialogue is a virgin, naïve of all things sexual, who has been brought up by her mother to be well-mannered, modest, decent and obedient. Madame de Saint-Ange, a 26-year-old libertine woman who is the owner of the house and bedroom in which the dialogue is set. She invites Eugénie for a two-day course on being libertine. Le Chevalier de Mirval, Madame de Saint-Ange's 20-year-old brother. He aids his sister and Dolmancé in the ordeal of "educating" Eugénie. Dolmancé, a 36-year-old atheist and bisexual (though with a strong preference for men), and friend of Le Chevalier's. He is Eugénie's foremost teacher and "educator". Madame de Mistival, Eugénie's provincial, self-righteous mother. Augustin, Madame de Saint-Ange's eighteen or twenty year-old gardener. Summoned to assist in the sexual activities in the fifth dialogue. Plot 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." He then