From the point of view of the actual content of scientific theories and approaches that Hegel summarizes and locates within his system, his Philosophy of Nature is clearly a product of his time. Nevertheless, many of the underlying philosophical issues dealt with are still now far from settled. Thus, while Newtonian physics clearly became established in ways that made Leibniz’s dynamic physics seem obsolete as empirical theory, debate still goes on as to whether conceptions of space-time in post-Newtonian physics is to be conceived in Newtonian or Leibnizian ways.