Abstract
Any attempt to assess the validity of Kant’s basic philosophical approach to the problems of physics must begin, not with a comprehensive metaphysical foundation of natural science but, rather, with the metaphysical foundation of the science directed to the primordial basis of nature, viz., the science of ponderomotive nature. The concrete aggregate of its constructive concerns is the aggregate of momenta. The synthesis of this aggregate is subject to a dynamic reciprocity of nature under the two radical aspects of reality and unreality – factors or “aspects” reflected in cognition as subjective activity and its immediate objective correlate. The synthetic enterprise culminates in the recognition of a schematic event-unity, which is at the same time the basis of the possibility of emergence from the preceding sphere of ponderomotive nature into a higher-synthetic sphere of concrete, materio-formal nature.