C. S. Lewis was a prolific writer known for his contributions to literature, theology, and philosophy. His bibliography includes famous works such as The Chronicles of Narnia, a series of seven fantasy novels, and Mere Christianity, a theological book that explores Christian beliefs. Lewis also wrote essays, poetry, and academic texts, showcasing his versatility as an author. In addition to fiction and theology, Lewis authored The Screwtape Letters, a satirical correspondence between a senior demon and his nephew, and The Abolition of Man, a philosophical treatise on education and morality. His works continue to influence readers and scholars worldwide.