I was taught at the Ecole Normale Supérieure in Paris, at the Sorbonne and at the University of Lille. I was professor of Greek and of Ancient Philosophy at the University of Lille (1983-90 and 1994-2007), at Princeton University (1990-1994), and at the University of Paris-Sorbonne (2007-2011). I have been Fellow at the Wissenschaftskolleg in Berlin and member of the Institut Universitaire de France. Since my retirement in 2011, I have been teaching at the Universidad Panamericana, Mexico, D.F. My main publications include a book on Plato’s Laws (Médiation et coercition. Pour une lecture des ‘Lois de Platon, Presses Universitaires du Septentrion, 2005) ; an edition of Diogenes of Apollonia (Diogène d’Apollonie. Edition des fragments et des témoignages , Academia Verlag, 2nd ed. 2008), a collection of essays on Aristotle, Plato, and Presocratic philosophy (Histoire, Doxographie, Vérité, Peeters, 2007) ; and (in collaboration with Glenn W. Most) an edition in 9 volumes of Early Greek Philosophy in the Loeb Collection, Harvard University Press, 2017 (also in French by Fayard).