Alfred North Whitehead
In 1997, he defended his doctoral thesis, "Intuition pré-systématique et intuition ontologique chez Alfred North Whitehead. Euristique du pancréativisme de l’époque de Harvard" ("Pre-systematic Intuition and Ontological Intuition According to Alfred North Whitehead: The Heuristics of Pan-creativism in the Harvard Era"), written under the supervision of Marcel Crabbé.