What was the collective title of C.S. Lewis’s BBC talks later published from 1941 to 1944?

Mere Christianity was the collective title of C.S. Lewis’s BBC talks later published from 1941 to 1944.

Lewis delivered a series of radio talks during the Second World War that explained and defended central Christian beliefs for a general audience. The broadcasts were later revised and collected in book form as Mere Christianity.

The title refers to the common core of belief shared by the major historic Christian traditions, rather than to a separate denomination. Lewis organized the book into sections that developed moral reasoning, Christian belief, and practical consequences of faith. The work became one of his best-known contributions to Christian apologetics.

The talks were not originally delivered as a single uninterrupted book. Their radio origin helped shape Lewis’s clear, conversational style, while later editing and arrangement created the familiar published structure. Christian Behaviour and Beyond Personality were titles associated with portions of the broadcast and book history, which can cause confusion about the overall title.