My research mainly concerns the question of knowing what types of relations there are between our concepts of attitudes and intentional actions (in particular those of belief, intention and desire) and basic normative concepts like those of reason and rationality.

It is widely acknowledged that attitudes and intentional actions are governed by norms, but that is as far as the consensus goes. Are the norms of belief similar to those of action and intention? Are they at least commensurable? Do they have one or more common sources? Can they be explained using the same basic concepts? Is the existence of such standards compatible with some form or other of philosophical naturalism? These are some of the general questions that guide my research.

My research mainly concerns questions of logic, the foundations of mathematics and the philosophy of mathematics. It can be divided roughly into 3 overlapping fields: the philosophical scope and applications of categorical logic, the foundations of mathematics deriving from category theory and, lastly, the epistemology and ontology of contemporary mathematics.

My current research deals mainly with the nature, scope and modalities of intellectual cognition, as the question was posed historically in medieval university debates (13^th and 14^th centuries). I am also interested in problems of ontology and metaphysics, especially in the topic of universals, as well as epistemological issues involved in the question of the relationship between the philosophical and religious discourses. My publications almost always comprise three dimensions: the critical edition of Latin texts from the High and Late Middle Ages, the translation of these documents into French, and their interpretation and analysis from the viewpoint of a critical history of medieval thought.

Mes travaux portent sur la philosophie des sciences, surtout sur l'histoire et la philosophie de la physique. Je m'intéresse également à l'épistémologie et la théorie de la décision. Je cherche à mieux comprendre les premiers stades de recherches d'une théorie scientifique en analysant les caractéristiques qui indiquent qu'une théorie aie un caractère prometteur, ainsi que les pratiques méthodologiques qui promeuvent le progrès théorique.