The book analyzes the work of one of the largest Russian philosophers of the XX century. Ivan Alexandrovich Ilyin (1883-1954). Particular attention is paid to the two most important works of mature Ilyin - the two-volume work & # 96; Hegel's philosophy as a doctrine of the concreteness of God and man & # 96;, one of the best in the world philosophical literature about Hegel, and the book & # 96; On resistance to evil by force & # 96;. The work of the late Ilyin, who tried to formulate the foundations of Orthodox philosophy, is covered in detail.