World War, with a young generation of mathematicians led by André Weil, known for his foundational work in number theory and algebraic geometry (also the brother of fellow student, philosopher Simone Weil). This rejuvenation continued into the 1930s, as exemplified by the 1935 launch of the influential Nicolas Bourbaki project, whose work permeated the field of mathematics throughout the 20th century. In 1940 former student Henri Cartan was appointed professor at the school like his father Élie Cartan, carrying the school's importance in the field still further with his work in algebraic topology. His teaching, which continued until 1965, was vastly influential in shaping his students, who included Yvonne Bruhat, Gustave Choquet, Jacques Dixmier, Roger Godement, René Thom and Jean-Pierre Serre. Denis Auroux, a famous symplectic geometer at Harvard University, is also an acclaimed Normalien. Since the 1936 establishment of the Fields Medal, often called the "Nobel Prize for mathematics", eleven normaliens have been recipients, contributing to ENS's reputation as one of the world's foremost training grounds for mathematicians: Laurent Schwartz, Jean-Pierre Serre (also a recipient of the inaugural Abel Prize in 2003), René Thom, Alain Connes, Jean-Christophe Yoccoz, Pierre-Louis Lions, Laurent Lafforgue, Wendelin Werner, Cédric Villani, Ngô Bảo Châu and Hugo Duminil-Copin. Alexander Grothendieck, also a Fields medallist, though he was not a normalien, received a substantial part of his training at the school. These twelve former students have made ENS the institution with the most Fields medallist alumni of any institution worldwide. Former student Yves Meyer was also awarded the Abel prize. In addition, eight normaliens have gone on to receive the Nobel Prize in Physics: Claude Cohen-Tannoudji, Pierre-Gilles de Gennes, Albert Fert, Alfred Kastler, Gabriel Lippmann, Louis Néel, Jean Baptiste Perrin and Serge Haroche, while other ENS physicists include such major figures as Paul Langevin, famous for developing Langevin dynamics and the Langevin equation. Alumnus Paul Sabatier won the Nobel Prize in Chemistry. Philosophy Its position as a leading institution in the training of the critical spirit has made ENS into France's premier training ground for future philosophers and producers of what has been called by some "French theory". Its position as a philosophical birthplace can be traced back to its very beginnings, with Victor Cousin a student in the early 19th century. Two ENS philosophers won the Nobel Prize in Literature for their writings, Henri Bergson and Jean-Paul Sartre. Raymond Aron, the founder of French anti-communist