It is not an easy task to write the life of a man who is still living. If the biographer is hostile to his subject, the slaughtering may be an exciting spectacle; if he wishes, not to lay a victim out, but to pay a tribute of admiration tempered by criticism, he has to run the risk of offending the man he admires, and all those whose admiration is in the nature of blind hero-worship. If he is conscientious, the only thing he can do is to give an honest expression of his own views, or a mosaic of the views of others which seem to him correct, knowing that he may be wrong, and that his...