Clive Staples Lewis was a British author, literary scholar, and Anglican lay theologian. He held academic positions in English literature at Magdalen College, Oxford from 1925 to 1954, and later at Magdalene College, Cambridge from 1954 to 1963. Lewis is best known for writing The Chronicles of Narnia, a series that has become a cornerstone of children's and fantasy literature. Beyond this major work, he produced a substantial body of fiction including The Screwtape Letters, a satirical epistolary novel, and The Space Trilogy, a series of science fiction novels exploring theological themes. In addition to his fiction, Lewis was a prolific writer of Christian apologetics. His non-fiction works include Mere Christianity, Miracles, and The Problem of Pain, in which he engaged with philosophical and theological questions for both academic and general audiences. His combination of literary skill and theological insight made him an influential voice in twentieth-century Christian thought.