What was the title of C.S. Lewis’s BBC radio-based Christian book published in 1952?

Mere Christianity was C.S. Lewis’s Christian book published in 1952 from material first presented in BBC radio broadcasts. It explains basic Christian beliefs in language intended for a broad general audience.

The broadcasts began during the Second World War, when Lewis spoke to listeners across Britain. The talks were later revised and collected in three sections: “Right and Wrong as a Clue to the Meaning of the Universe,” “What Christians Believe,” and “Christian Behaviour.”

Lewis did not write the book as a defense of one particular denomination. Instead, he aimed to present what he regarded as the central beliefs shared by most historic Christian traditions. The title refers to this common core, not to a separate church or denomination.

The work became one of Lewis’s most influential apologetic books. It is often read alongside The Problem of Pain and Miracles, but those books address different questions and were not simply alternate titles for the same project.