What does the one who does not believe believe in?

That a man of religion sits with a writer who adopts a scientific viewpoint, this is strange to us, and it is not rare in our Arab culture. At the beginning of 1995, Fernando Adornato, who was then the editor-in-chief of the Liberal magazine, thought of opening a dialogue between Cardinal Martini and Umberto Eco. During an initial meeting at his episcopate in Milan, Martini agreed to the idea of exchanging correspondence, and those letters appeared in the pages of Liberal between 1995 and early 1996. The letters were then published in 1996, in the book: What does the non-believer believe?