In 1960 he published his first novel, Mademoiselle Anicet, and redeveloped his review in the final form of the Cahiers de l'Herne, a collection of monographs devoted to ignored or cursed literary figures, including articles, documents and unpublished texts.
He directed books devoted to Burroughs, Pélieu, Henri Michaux, Ungaretti, Louis Massignon, Lewis Carroll, H. P. Lovecraft, Alexander Solzhenitsyn, Julien Gracq, Dostoyevsky, Karl Kraus, Gustav Meyrink, Thomas Mann, Edgar Allan Poe, Jules Verne, Arthur Koestler and Raymond Abellio, who imposed L'Herne on the French literary scene.
After listening to poets and writers of the beat generation (especially Claude Pélieu, Allen Ginsberg and Bob Kaufman) and meeting with Gombrowicz,[3] to whom he devoted an essay and a book of interviews, he revealed the possibility to leave Paris.
Two traumatic events happened: the censorship of his collection of aphorisms Immédiatement (1971) at the request of Roland Barthes (called a "shepherdess") and Maurice Genevoix (presented as a "writer for field mice") and the takeover of L'Herne by Constantin Tacou in favor of financial maneuvers later in 1973.
De Roux networked in the lusophone world, primarily serving the SDECE and because of his adherence to a "political transcendentalism" inspired by reading Raymond Abellio with whom his relations were intensifying at the time.