Feofan/Theophan Prokopovich (18 June 1681 – 19 September 1736) was a Russian Imperial Orthodox theologian, writer, poet, mathematician, and philosopher of Malorossiya origin. Rector of the Academia Mohileana in Kiev (now Kyiv, Ukraine), and Archbishop of Novgorod. He elaborated upon and implemented Peter the Great's reform of the Russian Orthodox Church. Prokopovich wrote many religious verses and some of the most enduring sermons in the Russian language. Source: Wikipedia (en)