 Just as physiology cannot abstract from physics, so philosophy—especially if it is critical—cannot abstract from historicity [Geschichtlichkeit]. After all, the uncritical Critique of Kant's can be understood historically only, and thus be overcome. [Human] behaviour and historicity are like breathing and air pressure—and—this may sound somewhat paradoxical—the failure to historicize philosophizing appears to me, in methodological respects, a metaphysical remnant. (CR, 69)