Camille Bryen is best known as an abstract painter from the post-World World War II Ecole de Paris. At the end of the 1940s and throughout the 1950s, his works were claimed by the various branches of lyrical abstraction dominating the Parisian artworld. It is less known that Bryen together with playwright Jacques Audiberti invented a new philosophical concept, abhumanism, which he himself considered as the most appropriate term for his art. Casting into question the humanistic values, both authors claimed a return to vitalistic materiality against the fallacious spiritual aims underlying humanism: I want to write like the bull mooes, Audiberti wrote. The books dealing with abhumanism (the founding Ouvre-boite. Colloque abhumaniste in 1952 and later L'Abhumanisme) designated painting (and that of Bryen in particular) as the abhumanist activity, because of its intrinsic material and earth-bound anti-spirituality. Abhumanising Bryen sets his artistic production in the wake of Dada and Surrealism, to which he was affiliated, who clearly accused the Western humanistic civilization of enacting World War I; it also sets him apart from the restricted lyrical and ahistorical argumentation related to post-World War II Parisian abstraction.