 and president of the International Sociological Association (ISA), from 1982 to 1986.He is a member of the Institute for Advanced Study (Princeton), an honorary foreign member of the American Academy of Arts and Sciences and has written several books.He was also Associate Director of Studies in the École des Hautes Études en Sciences Sociales in Paris, then visiting professor at the Collège de France and later Paris-Nanterre University.