Many fans are aware of that C.S. Lewis and J.R.R. Tolkien were close friends. Tolkien helped convert Lewis to Christianity, whereas Lewis encouraged Tolkien to expand his fictional writing; both taught at Oxford, both were interested in literature, and both wrote fictional books which propagated basic Christian themes and principles. At the same time, though, they also had serious disagreements - in particular, over the quality of Lewis' Narnia books.
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