C.S. Lewis is much loved by many Orthodox Christians who often raise the question, "Was C.S. Lewis an anonymous Orthodox?" Lewis's Atonement Theology and Soteriology, as well as his understandings of heaven and hell, are very similar to that of the Orthodox and stand opposed to traditional Roman Catholic and Protestant understandings of these matters.
Of course, Lewis remained an Anglican throughout his life; however, it is significant to note that for more than a century, and all through Lewis' life, the Anglican and Orthodox churches were studying union. The Orthodox gave up the quest for union in the late 1960s when it became apparent that liberalism, not orthodox theology, would prevail in the Church of England.
It is very fair to describe Lewis as an "Anonymous Orthodox"—his official allegiance lay with the Church of England, but his sympathies lay with the Orthodox. The most thoughtful study of Lewis' relationship to Orthodoxy was written by Bishop Kallistos Ware of Diokleia, who also teaches at Oxford. In an article published in Sobornost (an Anglican-Orthodox Ecumenical magazine) entitled "C.S. Lewis: an 'Anonymous Orthodox'?" he explores this fascinating question. He humbly relates that Lewis has a tendency to "idealize us Orthodox," and affirms that "even though C.S. Lewis' personal contacts with the Orthodox Church were not extensive at the same time his thinking is often profoundly in harmony with the Orthodox standpoint."
Although he can't be looked upon as an Orthodox writer, his consistent sympathy for Orthodoxy has to be considered. As one of his biographers recalls (in "C.S. Lewis and His Times," by George Sayer), after a holiday spent in Greece together with Lewis and his wife, Lewis told him that of all the liturgies he'd ever attended, he preferred the Greek Orthodox liturgy to anything that he had seen in the West, Protestant or Roman Catholic. Then he went on to say that of all the priests and monks that he had ever had the opportunity to meet, the Orthodox priests that he ran across in his sojourn in Greece were the holiest, most spiritual men he had ever met. C.S. Lewis referred to a certain look they had, a sense. Lewis himself, in one of his letters, speaks of having been at an Orthodox liturgy and he said he loved it. He said "some stood, some sat, some knelt and one old man crawled around the floor like a caterpillar." He "absolutely loved it." We only know for sure that C.S. Lewis loved the Orthodox Church, though he never joined it and remained in the Anglican Church.
From the Orthowiki website
