He participated with other colleagues committed to the left (Elena Cassin, Maxime Rodinson, Maurice Godelier, Charles Malamoud, André-Georges Haudricourt, Jean-Paul Brisson, Jean Yoyotte) in a Marxist think tank organised by Jean-Pierre Vernant.
He was part of a group of leftist intellectuals who met in a Marxist think tank organized by Jean-Pierre Vernant.