 An influential textbook by Gilles-Gaston Granger, Lógica e Filosofia das Ciências —first published in 1955—is acknowledged as the first introduction to the field in Portuguese. A disciple of Gaston Bachelard, Granger taught at the University of São Paulo (USP) from 1947 to 1953 and was a major force in the development of philosophy of science in Brazil. His work favored a historically-oriented approach hospitable to the Anglo-Saxon analytic style. Back in Europe he associated himself with various philosophical and social projects; in 1986 he was elected to the Chair of Comparative Epistemology at the Collège de France. The research projects Granger started in Brazil continued after his tenure, especially thanks to the efforts of Oswaldo Porchat.