Russian thinker and public figure, scientist and writer A. A. Bogdanov (Malinovsky) (1873–1928) is the author of many works on problems of philosophy, sociology, economics and culture. Developed and formulated the principles of universal organizational science - tectology. “Empiriomonism” is Bogdanov’s main philosophical work, which presents his version of the theory of knowledge, based on the monistic interpretation of experience. An important achievement of the author of “Empiriomonism” is the creation of the “substitution” method, which was the prototype of the modeling method, which has become widespread in modern science and philosophy. Designed for everyone interested in the problems of philosophy and the history of science.