Ivan Jablonka is Professor of History at Universite Paris 13 and a researcher at College de France. He is the author of A History of the Grandparents I Never Had, winner of the Prix du Senat du livre d'histoire, Prix Guizot de l'Academie francaise, and Prix Augustin-Thierry des Rendez-vous de l'histoire de Blois; and of Laetitia ou la fin des hommes (Laetitia or the end of men)], winner of the Le Monde's 2016 Prix litteraire, the 2016 Prix Medicis, and the 2016 Prix des prix. Nathan J. Bracher is Professor of French at Texas A & M University.