The publication in 1947 of Sade my neighbor made a decisive date in the arrival of Sade to the center of contemporary reflection.

Its reissue in 1967, preceded by a new essay entitled The crimina philosopher, came to propose, from their confrontation, a double reading. In 1947, Pierre Klossowski seemed that atheism of Sade had to understand first of all by his previous relationship with theology, that is, by its radical opposition to it. In 1967, it estimates that the primitive and irreducible generator Sade's work, perversion fact is: What is the sadism of Sade? What is the role of reason in perversion? Sade's effort is to discuss the incommunicable anomaly according to rational norms of atheism. But what these rules mean and what atheism means, when they are structurally linked to perversion?

Today, when Sade seems to have abandoned that center that came to occupy, not follow his mad determination to persevere in crime demanding effort of reflection that can not stop thinking about terror and its former role of consciousness of our weather? Are not think and worry that, today, philosophers and writers, far from walking around the edge of the abyss that made them recognized fellowmen de Sade, are routed committed to integration, unable either to think how to say the "no" than in-human that since at least the time Sade could see, governs the relationship of man with himself and with the other himself, with his neighbor?