Jean Tirole is scientific director of the Institut d'Economie Industrielle, University of Social Sciences, Toulouse. He is also affiliated with CERAS, Paris and MIT, where he holds a visiting position. Before moving to Toulouse in 1991, he was professor of economics at MIT. In 1998, he was president of the Econometric Society, whose executive committee he has served on since 1993. He is president-elect of the European Economic Association. Jean Tirole received a Doctorate Honoris Causa from the Free University in Brussels in 1989, the Yrjö Jahnsson prize of the European Economic Association in 1993, and the Public Utility Research Center Distinguished Service Award (University of Florida) in 1997. He is a foreign honorary member of the American Academy of Arts and Sciences (1993) and of the American Economic Association (1993). He has also been a Sloan Fellow (1985) and a Guggenheim Fellow (1988). He received his PhD in economics from MIT in 1981, engineering degrees from Ecole Polytechnique, Paris (1976) and from Ecole Nationale des Ponts et Chaussées, Paris (1978) and a ``Doctorat de 3ème cycle'' in decision mathematics from the University Paris IX (1978).