The famous Russian and Ukrainian philosopher, academician of the NAS of the Soviet Ukraine Pavlo Kopnin was both a talented scientist and unordinary science organizer. It had made him the key figure in philosophical life of the Ukrainian Republic of 50s - 60s of the last century. His name was associated with cardinal changes in Ukrainian philosophical community under conditions of ideological pressing and suspicious attitude on the part of communist establishment to any social and humanitarian innovations. While working in Ukraine, he wrote his most important and most interesting scientific works in the branch of logic and methodology of sciences, formulated the integral program of rationalist rethinking of the content and methodological functions of dialectical materialism and Marxist philosophy in whole in the context of the world philosophical process, became the founder of some new research guidelines concerning the logic and system analysis of scientific reasoning. Disregarding an ideological label of 'the bourgeois nationalist', he initiated extension of studies on history of Ukrainian philosophy upon the new original source base, as well as development of academic sociological science in Ukraine. The analysis of P. Kopnin's activity of Ukrainian period enables to clarify the essence of the Soviet philosophy phenomenon, as well as the tendencies of its transformation.
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