"Part of this book’s tremendous impact comes from the obvious fact that its author was such a brilliant polymath. And part comes from the way he conveys what happened to him — passionately working and striving, deferring gratification, waiting to live, learning to die — so well. None of it is maudlin. Nothing is exaggerated. As he wrote to a friend: 'It’s just tragic enough and just imaginable enough.' And just important enough to be unmissable".