The article deals with the critic that Reinhart Koselleck makes to Otto Brunner\u2019s use of historical sources, which is regarded as a crucial point to understand the methodological reflection of both German speakers authors. This reflection is related, on one hand to the history of political and social concepts; on the other to constitutional history. In addition, it will be argued that methodological discussion had an important role in the very concept of history and the meaning acquired by historio- graphical practic
