 What this amounts to is the idea that history is the result of conceptualization of the past on the part of the people who tell it—professional historians, politicians, partisans, and ordinary citizens. (It is interesting to note that Koselleck’s research in the final years of his career focused on the meaning of public monuments, especially war memorials.) It is therefore an important, even crucial, task to investigate the historical concepts that have been used to characterize the past. A key concept that was of interest to Koselleck was the idea of “modernity”. This approach might seem to fall within the larger field of intellectual history; but Koselleck and other exponents believe that the historical concepts in use actually play a role as well in the concrete historical developments that occur within a period.