At the beginning I would like to explain my understanding of the word metaphysics . In the development of humanity, in all history of civilization, we observe both useful and inescapable tendency to disciplinary specialization, based on a closer contact with a selected fragment of reality, such as when carpenter specializes in wood processing and an astronomer in observations of stars and planets. This tendency, however, resulted in an opposite need for an interdisciplinary reflection that is fullfilled today by several disciplines, mainly by philosophy in its interdisciplinary general sense, and especially by metaphysics.