Nick Spencer is Research Director of the religion and society think tank Theos. He is the author of a number of books, most recently Atheists: The Origin of the Species and The Evolution of the West. He writes on the history of ideas, and in particular on the immense influence of Christianity on Western thought and life. This is not a popular subject. He also writes on the relationship between Christianity and politics, in Britain and beyond. cThis is even less popular. He doesn't talk about his work much on the rare occasions he is invited out to dinner parties.