Werner Herzog plays a certain role in the public imagination. At least I think it’s the public imagination and not just my own. The German film-maker has become meme-ified and satirised – not his work, but his person, his wild-haired, Bavarian-accented, sad-eyed, difficult-truth-intoning person. As I read Herzog’s new book, I found myself thinking of the bears at my local zoo. Two young grizzlies were introduced last year; I became fascinated by them and went to see them almost every week. As I watched the bears play and swim and sleep, I was occasionally visited by strange, glinting moments of...