This French paperback edition presents Ouspensky's *Entretiens avec un diable*, a work that uses the figure of a diabolical interlocutor to stage a philosophical inquiry into belief, reason, temptation, and the motives behind human conduct. Ouspensky is best known for writings on consciousness, perception, and the limits of ordinary experience, and this title extends that interest into a literary-philosophical mode. Rather than offering a conventional doctrinal argument, it invites readers into a dialogue about self-knowledge, moral choice, and the uneasy boundary between skepticism and faith. Its compact form makes it a concise point of entry into Ouspensky's larger body of thought, especially for readers interested in philosophy, spirituality, and literature shaped by metaphysical questions.