Francisco Sanches e o Problema do Conhecimento na Renascença

This study focuses on the peculiar epistemological conception articulated by the Portuguese philosopher Francisco Sanches in his influential book That Nothing is Known (Quod nihil scitur), published in 1581. Sanches’ sceptical views were regarded by many as an inspiration for Descartes, but the specific kind of scepticism held by Sanches has been a matter of dispute. Groundbreaking investigations such as those of Joaquim de Carvalho, Lúcio Craveiro da Silva, Marcelino Menéndez y Pelayo, Artur Moreira de Sá and Joaquim Veríssimo Serrão are considered alongside contemporary readings. It is argued, following the interpretations that emphasize the methodical nature of Sanches’ doubt, that a dogmatic scepticism is not only incompatible with the medical practice of the author but also with his religious convictions, with empiricism and faith representing spheres that are not conceived as irreconcilable in the Renaissance.