Philosopher of science who systematized dialectical materialism for natural science and created the Kedrov Triangle
"What kind of personal tragedy is that?! The tragedy of the party and the people — that's the real tragedy!" — criticizing Khrushchev's 1956 Secret Speech, Rodina, 1995 no. 8
Born in Yaroslavl, Bolshevik at fifteen. Graduated MSU chemistry and philosophy at the Institute of Red Professorship. Founding editor of Voprosy Filosofii (1947). Authored over 1,000 works on Dalton, Mendeleev, and the classification of sciences, and proposed the 'Kedrov Triangle' linking natural, social, and philosophical knowledge. Led the anti-resonance campaign in chemistry in the late 1940s. Later directed IIET (1962–1972) and the Institute of Philosophy (1973–1974), institutionalizing history and methodology of science. Criticized Khrushchev's Secret Speech, delaying his advancement; signed the 1973 Sakharov condemnation letter. Academician from 1966, died 1985.
Career Timeline
- 1918–1919Joined Bolshevik Party; assistant to M.I. Ulyanova at Pravda, then Cheka
- 1930–1935Graduated MSU Chemistry; Candidate of Chemical Sciences (Gibbs paradox)
- 1935–1937Instructor, Science Department, CC VKP(b)
- 1939–1949Institute of Philosophy, USSR Acad. of Sciences; Doctor of Philosophical Sciences 1946; Red Army 1941–1945
- 1947–1949Founding editor-in-chief, Voprosy Filosofii
- 1955–1972Senior researcher, then Director (1962–1972), IIET, USSR Academy of Sciences
- 1966Elected full Academician, USSR Academy of Sciences
- 1973–1974Director, Institute of Philosophy, USSR Academy of Sciences
Related historical events
The Kedrov Triangle: Classification of Sciences
Kedrov's most original theoretical contribution is a non-linear classification of the sciences known as the 'Kedrov Triangle.' He divided science into three fundamental blocks: the natural sciences (physics, chemistry, biology, etc.) at the apex, the social sciences (history, economics, sociology, etc.) at the lower left, and philosophy (dialectics, logic, epistemology) at the lower right. Mathematics sits between the natural and philosophical sciences, the technical sciences between the natural and social sciences, and psychology occupies a special position at the center of the triangle, connecting all three domains. The schema represents both the differentiation and the integration of scientific knowledge and visualizes transitional and contact zones between disciplines. Kedrov developed this framework across three volumes of 'The Classification of Sciences' published between 1961 and 1985, extending Marx's and Engels's earlier classifications to account for the development of modern natural and social science. It became a standard reference in Soviet science studies and the teaching of the history and methodology of science, and contributed to the institutionalization of naukovedenie (the science of science) as a discipline.