In conversations with British and American scientists and theologians such as the biologist Steven Rose, the psychiatrist Montague Barker, and the Archbishop of York, the author addresses questions about science and belief. The topics discussed include how we should view ourselves in the light of modern science, how scientists react to the vastness of the universe, whether the universe was created by the Big Bang and the idea of a creator is thereby ruled out, how mankind might continue to evolve, and what Einstein meant when to he said that "God does not play dice". The book ties in with a BBC Radio 4 series.