had their own professional interests, and misunderstanding increased. The situation was aggravated by the continued drunkenness of Zinoviev. Career takeoff: science and teaching (1955–1968) Zinoviev gradually lost interest in the logical circle, where Shchedrovitsky moved to the role of leader. Zinoviev had his own ambitions, he was not satisfied with the "collective farm" and "party" model circle (as per Pavel Fokin). In 1955, he received the position of junior researcher at the Institute of Philosophy of the Academy of Sciences of the Soviet Union (sector of dialectical materialism), where he felt comfortable. The institute was primarily an ideological institution with rigid orders, but a certain revival (as described by Vladislav Lektorsky) of philosophical thought in the 1950s made it possible to pursue science, including in the field of logic, which Zinoviev recognized. In the second half of the 1950s, the formation of logical science took place, textbooks, collections, collective monographs were published, and methodological seminars were held. Zinoviev was actively involved in scientific work, but the first articles were rejected at sector meetings, which, according to Pavel Fokin, was an echo of the story of Ilyenkov, who was then persecuted. Group mates (Mamardashvili and others) considered the choice of mathematical logic as an academic career as a departure from the struggle in the direction of security and well-being; Zinoviev's disciple Yury Solodukhin drew attention to his disappointment in the speculative nature of Marxism. The first publications took place in 1957, a year later one of the articles was published in Czech. For fifteen years (1960–1975) Zinoviev published a number of monographs and many articles on non-classical logic. Academic career developed rapidly: in 1960, Zinoviev became a senior researcher, in November 1962, by unanimous decision of the Academic Council of the Institute of Philosophy of the Academy of Sciences of the Soviet Union, received a doctorate for his study "The logic of statements and the theory of inference". Opponents of the defense were Valentin Asmus, Sofya Yanovskaya and Igor Narsky. In 1958–1960, he read the special course "The Philosophical Problems of Natural Science" at the Moscow Institute of Physics and Technology, since 1961 – the special course at Moscow State University (faculty of philosophy). In 1966 he received the title of professor, in 1967–1968, part-time headed the department of logic, Faculty of Philosophy, Moscow State University. In 1968, he joined the editorial board of the journal Problems of Philosophy, a year