It was in February 1935 that Lévi-Strauss went to Brazil to teach sociology at the newly founded University of São Paolo. In the stimulating atmosphere of the city soon he struck up a friendship with the founders of Brazilian modernism, in particular with Mário de Andrade, the central figure of the avant-garde movement, who helped the young researcher to finance his expeditions into the Mato Grosso and the Amazon Rainforest. Twenty years later Lévi-Strauss wrote about this period in Brazil, after having encountered other cultures and having made other experiences. The highly reflexive narrative of Tristes Tropiques contains most of the topics which return in his later works and about which the authors of this volume have pondered from different perspectives. This introductory text reconstructs the principal stages of Lévi-Strauss’ enterprises in Brazil and illustrates how his departure for the New World became the start of a great career.