He was born in Buenos Aires, in 1953. He studied medicine at the UBA, and after being arrested by the Argentine dictatorship, he went into exile in France in 1978. Philosopher, epistemologist, doctor of psychology, interdisciplinary researcher, he is the author of forty books, translated into more than fifteen languages. A former university professor, he founded and coordinates the "Malgré Tout" study and militancy collective in France and Italy.