I respect Mr Feynman's intelligence and skill as a lecturer. His reputation makes me feel bad about giving this book only two stars. But this book isn't his best work. The three lectures in this book were given in 1963. It's interesting to speculate how his speech would be different if given today. In 1963 the lectures may have seemed more cutting edge. I was particularly interested in what he had to say about the relationship between religion and science. Well, he did a fine job describing the conflict between religion and science. Then he asked the question, "How can religion and science coexist without being a threat to each other?" His answer was, "I don't know." I suppose that shows he's smart enough to not wade into theology. But I was disappointed. One interesting thing he said is that there are some scientists who believe in God, but there aren't very many who have an image of God that matches that of their parents. Of course that's true many non-scientists too.