Isabelle Tassignon holds a PhD in archaeology and history of religions. She has been a member of the École française d'Athènes and a professor at the University of Namur. She is now the curator of the classical archaeology and ethnology collections at the Fondation Gandur pour l'Art. Henri Lavagne has a PhD in literature and was a member of the École française de Rome. He has taught at the École pratique des Hautes Études (Paris-Sorbonne); in 2006 he joined the Institut (Académie des Inscriptions et Belles-Lettres).