What is relationship of philosophy (in particular, metaphysics) to physics? It seems to me that both disciplines, especially the "classical" metaphysics of the Ancient Greeks and the medieval Christians, attempt to understand the structure of reality, but physics focuses on the development of the material world of matter, metaphysics primarily aims at understanding the non-material world (including how it is related to and shapes the material world). Is this an adequate understanding? I would be very interested to hear your opinion(s) on this subject.