The culture of the Soviet Union passed through several stages during the country's 69-year existence. It was contributed to by people of various nationalities from every one of fifteen union republics, although the majority of the influence was made by the Russians. The Soviet state supported cultural institutions, but also carried out strict censorship. History Lenin era The main feature of communist attitudes towards the arts and artists in the years 1918–1929 was relative freedom, with significant experimentation in several different styles in an effort to find a distinctive Soviet style of art. In many respects, the NEP period was a time of relative freedom and experimentation for the social and cultural life of the Soviet Union. The government tolerated a variety of trends in these fields, provided they were not overtly hostile to the regime. In art and literature, numerous schools, some traditional and others radically experimental, proliferated. Communist writers Maxim Gorky and Vladimir Mayakovsky were active during this time, but other authors, many of whose works were later repressed, published work lacking socialist political content. Film, as a means of influencing a largely illiterate society, received encouragement from the state; much of cinematographer Sergei Eisenstein's best work dates from this period. Education, under Commissar Anatoly Lunacharsky, entered a phase of experimentation based on progressive theories of learning. At the same time, the state expanded the primary and secondary school system, and introduced night schools for working adults. The quality of higher education was affected by admissions policy that preferred entrants from the proletarian class over those from bourgeois backgrounds, regardless of the applicants' qualifications. Under NEP, the state eased its active persecution of religion begun during war communism but continued to agitate on behalf of atheism. The party supported the Living Church reform movement within the Russian Orthodox Church in hopes that it would undermine faith in the church, but the movement died out in the late-1920s. In family life, attitudes generally became more permissive. The state legalized abortion, and it made divorce progressively easier to obtain, whilst public cafeterias proliferated at the expense of private family kitchens. Stalin era Arts during the rule of Joseph Stalin were characterized by the rise and domination of the government-imposed style of socialist realism, with all other trends being severely repressed, with rare exceptions. Many notable works of Mikhail Bulgakov were not repressed, although the full text of his novel The