Vladimir Sergeyevich Solovyov (; also romanized as Soloviev; – ) was a Russian philosopher, theologian, poet, pamphleteer, and literary critic, who played a significant role in the development of Russian philosophy and poetry at the end of the 19th century and in the spiritual renaissance of the early 20th century. Life and work Vladimir Solovyov was born in Moscow; the son of the historian Sergey Mikhaylovich Solovyov (1820–1879); his elder brother Vsevolod (1849-1903), became a historical novelist, and his younger sister, Polyxena (1867-1924), became a poet. Vladimir Solovyov's mother Polyxena Vladimirovna belonged to a family of Polish origin and had, among her ancestors, philosopher Gregory Skovoroda (1722–1794). In his teens, he renounced Eastern Orthodoxy for nihilism, but later his disapproval of positivism saw him begin to express views that were in line with those of the Orthodox Church. From 1869 to 1873 Solovyov studied at the Imperial Moscow University, where his philosophy professor was Pamfil Yurkevich (1826-1874). In his 1874 work The Crisis of Western Philosophy: Against the Positivists (, Solovyov discredited the positivists' rejection of Aristotle's essentialism, or philosophical realism. In Against the Positivists he took the position of intuitive noetic comprehension, or insight. He saw consciousness as integral (see the Russian term sobornost) and requiring both phenomenon (validated by dianoia) and noumenon validated intuitively. Positivism, according to Solovyov, validates only the phenomenon of an object, denying the intuitive reality that people experience as part of their consciousness. As Solovyov's basic philosophy rests on the idea that the essence of an object (see essentialism) can be validated only by intuition and that consciousness as a single organic whole is done in part by reason or logic but in completeness by (non-dualist) intuition. Solovyov was partially attempting to reconcile the dualism (subject-object) found in German idealism. In 1877, Solovyov moved to Saint Petersburg, where he became a friend and confidant of the writer Fyodor Dostoyevsky (1821–1881). In opposition to his friend, Solovyov was sympathetic to the Roman Catholic Church. He favoured the healing of the schism (ecumenism, sobornost) between the Orthodox and Roman Catholic Churches. It is clear from Solovyov's work that he accepted papal primacy over the Universal Church, but there is not enough evidence, , to support the claim that he ever officially embraced Roman Catholicism. As an active member of Society for the Promotion of Culture Among the Jews of Russia, he spoke Hebrew and struggled to