This work investigates the historiographic production and the political articles from the Portuguese historian Joaquim Barradas de Carvalho in the periodthat he lived in Brazil in exile (from 1964 to 1970). The main goal is to show that Barrdas academic production is influenced and it also influences his political pointof view. The researcher and USP s professor is a mirror from the member of the Portuguese Communist Party and opponent to Salazarism - mirror that reflectsand is reflected at the same time. It was noticed that Barradas - experience as an exile in Brazil has a fundamental importance on the definition of his academic andpolitical positions (influencing either on the image that he creates of the Salazarist scheme or on his own auto-image as an intellectual person). It is also sought tounderstand the singular way the author characterizes the discoveries period seen as the peak of the Portuguese History, and the center in which all the otherperiods are organized. With this objective, it is verified the theoretical influences on Barradas work, specially on the decandestist speech group of Portugueseauthors that had in common a warning for the decadence of the Portuguese society related to a saudade feeling from its glorious past. Finally, it is noticed that thisBaradas historical view determines and is determined by his opposing to salazarism (seen as a truly antithesis from the culture of the discoveries).