What title did C.S. Lewis give his 1941 BBC radio talks on Christianity?

C.S. Lewis gave his 1941 BBC radio talks under the title Broadcast Talks.

The BBC invited Lewis to address the British public during the Second World War, when radio reached audiences across the country. The talks presented basic Christian ideas in accessible language rather than focusing on a particular denomination. Lewis delivered the first series in 1941, followed by additional series in 1942 and 1944.

The material was later revised and published in book form. The first printed collection was titled Broadcast Talks, but the work became best known under the title Mere Christianity. That later title is therefore a common answer to questions about the book, but not the original title of the 1941 radio series.

The talks helped establish Lewis as a prominent Christian broadcaster. Their arguments and illustrations were later arranged into the sections now known as “Right and Wrong as a Clue to the Meaning of the Universe,” “What Christians Believe,” and “Christian Behaviour.”