Mere Christianity

Originally delivered as a series of radio talks during the Second World War, Mere Christianity presents C.S. Lewis's plainspoken case for the reasonableness of Christian belief. The book moves from a common moral law that Lewis argues all humans intuitively recognize, through the person and claims of Christ, into practical Christian ethics and a closing meditation on the nature of the soul.

Lewis deliberately steers around denominational disputes, aiming to defend what he called "mere" Christianity — the beliefs held in common across Christian traditions — using accessible analogies rather than technical theology.