And it's a huge issue. Narrator: The director of religious programming at the BBC asked C.S. Lewis to give some broadcast talks about faith. Duriez: Lewis, at first, was a bit uncertain.

He really was a man who had no faith and then came to faith but [was] erudite," said Campo. He said Lewis was "someone who knew as much about John Milton as he did about the Bible and yet became a ...

Narrator: Lewis was a bachelor living with Mrs. Moore and her daughter, Maureen, the mother and sister of a dead comrade from the first World War. They were family to him. After he embraced faith ...