In respect to geometry one recognizes, now that we have pointed out the hiddenness of its fundamental concepts, which have become inaccessible, and have made them understandable as such in first basic outlines, that only the consciously set task of discovering the historical origin of geometry (within the total problem of the a priori of historicity in general) can provide the method for a geometry which is true to its origins and at the same time is to be understood in a universal historical way; and the same is true for all sciences, for philosophy.