By the end of the eighteenth century, "dvoeverie" ("double faith"), popular religion which preserved Slavic pantheism under a Christianised surface, found appreciation among intellectuals who tried to delineate Russian distinctiveness against the West. At the dawn of the twentieth century, esoteric and occult philosophies and movements, including Spiritualism, Theosophy, Anthroposophy, Hermeticism, Russian cosmism and others, became widespread. At the same time the empire had begun to make steps towards the recognition of the multiplicity of religions that it had come to encompass, but they came to an abrupt end with the Russian Revolution in 1917. After the revolution, the Russian Orthodox Church lost its privileges, as did all minority religions, and the new state verged towards an atheist official ideology. Under the Soviet Union, the Russian Orthodox Church lived periods of repression and periods of support and cooptation by the state. Despite the policies of state atheism, censuses reported a high religiosity among the population; in 1929, 80% of the population were believers, and in 1937 two-thirds described themselves as believers, of whom three-fourths as Orthodox Christians. The Russian Orthodox Church was supported under Joseph Stalin in the 1940s, after the Second World War, then heavily suppressed under Nikita Khrushchev in the 1960s, and then revived again by the 1980s. While it was legally reconstituted only in 1949, throughout the Soviet period the church functioned as an arm of the KGB; many hierarchs of the post-Soviet church were former KGB agents, as demonstrated by the opening of KGB archives in the 1990s.