“Practical Metaphysics” is a new complete philosophical system that aims to find the internal connection and distinctions between the four main spheres of human spiritual life - scientific knowledge, artistic creativity, ethics and religion. The text is printed in the author's edition, with a corrected list of cited literature, footnotes and an index of names. This book was sent by the author to the West in 1970 and published in large excerpts in the magazine "Grani" (1973) under the pseudonym Andrey Moskovit. A separate publication was published in America, by the Ardis publishing house (1980), after Igor Efimov emigrated from the USSR.