Originally published in Mexico in 1970, is the first book by the Argentine philosopher Rodolfo Kusch (1922-79) to be translated into English. At its core is a binary created by colonization and the devaluation of indigenous practices and cosmologies: an opposition between the technologies and rationalities of European modernity and the popular mode of thinking, which is deeply tied to Indian ways of knowing and being. Arguing that this binary cuts through América, Kusch seeks to identify and recover the indigenous and popular way of thinking, which he contends is dismissed or misunderstood by many urban Argentines, including leftist intellectuals.