Many works from Reinhart Koselleck would have been influenced by Carl Schmitt's ideas. Such influences could be observed not only in critics to the philosophy of history, to the progress notion, to liberalism, but also in a methodological scope. This article searches to investigate in which way it is possible to approach the methodology of both authors, respectively, the conceptual history and the sociology of concepts. The methodological analysis could be a key to understand epistemological premises obtained from a existential dimension of man, probably shared by both authors.
sociology of concepts; conceptual history; secularization; friende-enemy; eschatology