Dialectics and the life. In memory of S. N. Mareev

The article deals with the issue of unity of life and philosophy of S. N. Mareev (1941-2019), who, as a follower of the outstanding Soviet philosopher E. V. Ilyenkov, continued the development of Marxist philosophy in the direction materialistic dialectics and materialistic understanding of history. On the specific circumstances of S. N. Mareev's life, it is shown that theoretical thought is ultimately determined by the subject-practical activity of a person, his life and social position. The author considers the specifics of S. N. Mareev's understanding of dialectics as a logic and theory of knowledge of Marxism, as the unity of the method of ascent from the abstract to the concrete, as concrete historicism. It is shown that the theoretical generalization is based on the actual generalization, which is carried out in the real historical process.