'''Nicholas Lossky''' or Nikolay Onufriyevich Lossky (Russian: Никола́й Ону́фриевич Ло́сский; [[December 6]] [O.S. November 24] 1870 – [[January 24]], 1965) was a Russian Orthodox Christian philosopher. His work expressed aspects of neo-idealism and metaphysical libertarianism from the Silver Age of Russian pre-Revolutionary and post-Revolution emigré philosophy, in what he termed intuitive-personalism, but deeply influenced by his [[conversion]] as an adult to [[Introduction to Orthodox Christianity |Orthodox Christianity]] and his engagement with its influence in modern Russian thought. His book ''History of Russian Philosophy'' is a classic intellectual history of nineteenth- and early-to-mid-twentieth-century Russian philosophy from an Orthodox Christian perspective. His most famous students were his son [[Vladimir Lossky]], an Orthodox theological writer, and the atheist-libertarian writer and Russian emigré Ayn Rand.