What was the original title of C.S. Lewis’s 1941 BBC radio talks on Christianity?

The original title of C.S. Lewis’s 1941 BBC radio talks on Christianity was Broadcast Talks. The talks were later revised and published in book form under the title Mere Christianity.

Lewis delivered the broadcasts during the Second World War, when the BBC sought programming that addressed religious and moral questions. His clear, conversational style made the talks accessible to listeners who might not have read academic theology.

The material appeared in stages. Broadcast Talks was followed by Christian Behaviour, and the series was later collected and revised as Mere Christianity. The final book presents a case for shared Christian beliefs rather than a detailed account of one denomination.

A common mix-up is to name Mere Christianity as the original broadcast title. That is the familiar title of the later book, not the name used for the first 1941 radio installment. The broadcasts helped establish Lewis as a prominent Christian writer for a broad English-speaking audience.