The purpose of this work will be to understand the international political thought of Joaquim Nabuco and Oliveira Lima through the reconstruction and systematization of the worldviews of these protagonists of the Brazilian international political thought between the decades of 1890 and 1910, period during which the debate of national modern diplomacy was, in our view, inaugurated. This dissertation will also analyze the construction of the cognitive structure that impinged on the agency of these figures. One of the hypotheses defended is the co-constitution between the Brazilian international thought and the political and diplomatic tradition. The ideas and the projects of international insertion advocated by Nabuco and Oliveira Lima would influence the way in which Brazilian diplomacy would operate, during the twentieth century, in the form of paradigms or cognitive maps. Whereas the former was the precursor of Americanism, the latter was the father of the Globalist thought in the Brazilian foreign policy.