Mere Christianity

“A Rare Gift.” —Commonweal, Edward Skillin
“The ideal persuader for the half-convinced.” —Anthony Burgess

First published in 1952, ‘Mere Christianity’ is C.S. Lewis’s enduring exploration of the core beliefs of the Christian faith. Adapted from a series of BBC radio talks given during World War II, the book offers a clear, thoughtful, and reasoned defense of Christianity, aiming to present a common ground of belief shared by Christians of all denominations.
Lewis begins by examining the universal human sense of morality, arguing that this “Moral Law” points to a divine source. From this foundation, he moves through the essential teachings of Christianity—discussing topics such as free will, sin, faith, forgiveness, and spiritual growth—with clarity, humility, and intellectual depth. Rather than focusing on denominational doctrine, he seeks to define the essence of Christian belief in a way that speaks to both believers and seekers.
With his characteristic wit and accessible style, Lewis invites readers into a deeper understanding of faith as not just a set of rules, but a transformative way of life. ‘Mere Christianity’ remains one of the most influential works in Christian apologetics, widely read and respected for its sincerity, logic, and lasting spiritual insight. It continues to challenge and inspire those exploring the meaning and purpose of faith.

CLIVE STAPLES LEWIS (1898-1963) was one of the intellectual giants of the twentieth century and arguably one of the most influential writers of his day. He was a fellow and tutor in English Literature at Oxford University until 1954 when he was unanimously elected to the Chair of Medieval and Renaissance English at Cambridge University, a position he held until his retirement. He wrote more than thirty books, allowing him to reach a vast audience, and his works continue to attract thousands of new readers every year. His most distinguished and popular accomplishments include Mere Christianity, Out of the Silent Planet, The Great Divorce, The Screwtape Letters, and the universally acknowledged classics, the Chronicles of Narnia. To date, the Narnia books have sold over 100 million copies and been transformed into three major motion pictures.