The problem of man and his ability occupies a special place because natural scientific knowledge has very limited opportunities to study this problem. Philosophical and social knowledge cannot claim to know a person perfectly. Therefore, one can only hope for a comprehensive approach. This approach makes it possible to greatly expand the boundaries of human learning due to the use of the entire rationalist tradition of understanding human nature and the possibilities of esoteric thinking. This article discusses Martin Heidegger’ viewpoints of human. He was a German logician whose work is maybe most promptly related with phenomenology and existentialism.