"The Philosophy in the Bedroom" is a work by the French philosopher and writer Marquis de Sade, published in 1795. The text is a dialogue that explores themes of sexuality, morality, and freedom, presenting controversial ideas about desire and the nature of human relationships. It features characters who engage in discussions that challenge societal norms and advocate for a radical form of libertinism. The work is notable for its explicit content and philosophical arguments, which reflect Sade's views on the interplay between pleasure and pain. It serves as both a critique of conventional morality and an exploration of the complexities of human desire, making it a significant text in the study of philosophy and literature.