Abstract

After the completion of I. Kant’s “Copernican” turn in metaphysics, all subsequent European philosophy to one degree or another was under his influence. The purpose of the article is to consider the reception and transformation of the Kantian theoretical philosophy by the Marburg school of neo-Kantianism. It is necessary to analyze the reasons for H. Cohen's and P. Natorp’s interpretation of Kant's criticism. To do this, one should consider (i) internalist and (ii) externalist factors in the formation of the Marburg School. Neo-Kantianism, on the one hand, emerged as a response to materialism, naturalism, and post-Kantian German idealism. In addition, the Marburg School was strongly influenced by the change in the scientific paradigm in mathematical natural science at the end of the 19th century. The justification by the Marburgers of Kant’s a priori doctrine presupposed thematization, first of all, of: a) purity of thought; b) systematic unity of thought and experience; c) the orientation of philosophy to the “fact of science”; d) transcendental method. As a result, the Marburg School interpreted the Kantian concept of the unity of consciousness; abandoned the principle of synthetic (real) unity of consciousness in favor of systematic (logical) unity; substantiated the purity of scientific thinking; put forward the requirement of orientation of philosophy to the “fact of science”; developed the concept of the origin of thinking (Ursprung); abandoned the idea of “givenness” of the subject of knowledge and proved its “assignment”; changed the understanding of the essence and functions of the transcendental method; put forward the concept of thinking as “generation” (“production”); formulated a new understanding a priori. The changes that took place in the 19th century in philosophy, mathematical natural science and mathematical sciences led to a sharp activation of constructivism. It can be concluded that Kant’s epistemological paradigm was realistic constructivism. Pure constructivism became the paradigm of the Marburg School.