I have been worming my way through books for over 40 years and consider myself to be pretty well-read. When I meet people who’ve read more, I wonder if they’ve ever got up from the sofa. And this is one of the best books I’ve ever read. The Once and Future King is an Arthurian fantasy – a tragedy, a comedy, a study of the nature of power and justice. It is the first book about King Arthur that I read and remains the best. (Is it really one of the best books I’ve ever read, or is it just that...