The friendship between sociologist Gilberto Freyre and historian Sérgio Buarque de Holanda found a correlation in the books in which each attempted to idealise a Brazil based on the notion of the tropics and Portuguese exceptionalism: Casa-Grande & Senzala (1933) and Raízes do Brasil (1936), respectively. At a later date, however, the latter completely departs from that approach to the Brazilian space and, with the notion of border, enters an enduring rivalry with his friend. It is to this divergence of views that we owe two distinct visions of Brazil, which are analysed and contrasted here by Luiz Feldman, a Brazilian diplomat.