Abstract
Polemical writings about philosophers, of little use if directed against straw men as is likely if not based on historical understanding, must incorporate cultural history, which, in focussing on a philosophy's relationship to its age, justifies ignoring historical sequence so long as figures are placed in context. Philosophy does progressively clarify what certain recurrent types of problems involve. The historian-philosopher writing a history of problems must know intimately philosopher and period, and reveal assumptions and aspects of problems hidden to the philosopher himself. Such a history does not merely report philosophy's results but alone elucidates its inner development