 The Latin American tradition of scholarship on the history of ancient and modern skepticism started in the 1970s with Oswaldo Porchat Pereira (1933–2017) in Brazil and Ezequiel de Olaso (1932–1996) in Argentina, who were in close contact and co-organized two conferences on skepticism: one in Campinas (Brazil) in 1986 and one in Buenos Aires (Argentina) in 1992. Porchat pursued his undergraduate and graduate studies in philosophy at the Universidade de São Paulo (USP), obtaining a Ph.D. with a dissertation on Aristotle’s conception of science. He spent research periods in the United States, the United Kingdom, and France, where he was heavily influenced by French historians of philosophy. He was professor at USP and the founder of both the philosophy department and the Centro de Lógica, Epistemologia e História da Ciência (on which see  Section 1)  at UNICAMP.