In the late 19th century a reversal of the values linked to the sacred and the profane can be observed. As Religion retreats, Positivism and faith in Progress fill the gap left by the abandoned spiritual belief. A nostalgia for transcendence arises amongst writers. Naturalism turns out to be sterile, but, sill, a belief in God seems to have become impossible. It is in this context that Huysmans writes his novels. The Durtal tetralogy in particular focuses on this theme: desperate, the main character wanders around Catholicism, seeking a sense of the Sacred. He first explores the world of Satanism before the conversion. But even when faith is regained, problems are not solved. In the religious domain itself, Durtal condemns the sacralization...