Born in Epenoy (Doubs), France, August 20th 1940.
- 1961-1966 : Scholarship in Ecole Normale Supérieure (Paris)
- 1965 : Agrégation de philosophie
- 1975 : PhD in Philosophy (Sorbonne, Paris)
- 1966-1975 : Teaching Assistant, Faculté des Lettres et Sciences Humaines (Paris) and Sorbonne (Paris I)
- 1971-1975 : Research Assistant, National Center for Scientific Research (CNRS)
- 1975-1979 : Assistant Professor, then Full Professor, Sorbonne (Paris I)
- 1979-1983 : Visiting Professor, then Full Professor, Philosophy Department, Geneva University, in charge of Analytical Philosophy Studies
- 1983-1992 : Full Professor, Sorbonne (Paris I), associated Professor, Geneva University
- 1985-1988 : Head of the Research Unit, National Center for Scientific Research (UA 1079) – History and Philosophy of Science
- 1992-1995 : Full Professor, Sorbonne (Paris)
- Since 1995 : Full Professor at the Collège de France (Paris), Chair of Philosophy of Language and Philosophy of Knowledge
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