Lewis, C. S.: - Clive Staples Lewis (1898-1963) was a British writer, literary scholar, and and arguably the most influential Christian writer of his day. He taught English literature at Oxford and Cambridge universities. He is best known for The Chronicles of Narnia series, but also wrote other works of fiction such as The Screwtape Letters and The Space Trilogy, and non-fiction Christian apologetics, including Mere Christianity and The Problem of Pain. Altogether Lewis wrote more than thirty books, which have been translated into more than thirty languages.