When brilliant individuals nearing their 100th birthdays write a book, it is a good idea to read it. Two years ago, the scientist James Lovelock celebrated his centenary with Novacene: The Coming Age of Hyperintelligence, in which he hailed a future dominated by artificial intelligence, while cautioning against its military uses. Now Henry Kissinger, at a stripling 98, has co-authored The Age of AI, bringing a brain steeped in great power strategy to the same topic. – The Times