Jean-Pierre Bourguignon is the Nicolaas Kuiper Honorary Professor at the Institut des Hautes Γtudes Scientifiques, Bures-sur-Yvette, France, where he was director from 1994 to 2013. His research interests are in differential geometry, in particular its relations with partial differential equations and mathematical physics. He was president of the SociΓ©tΓ© MathΓ©matique de France (1990β1992) and of the European Mathematical Society (1995β1998). He received the Paul Langevin prize from the AcadΓ©mie des Sciences de Paris in 1987 and the Physical Sciences and Mathematics Prize from the ComitΓ© du Rayonnement FranΓ§ais in 1997.