If you are allergic to fanfare you’d better bolt your doors and shutter your windows on September 25, because there is going to be a lot of it that day in the vicinity of the United Nations, when world leaders ratify the Global Goals for Sustainable Development. This is a genuinely big deal, of large consequence — let’s hope — especially for the poorest people on the planet, but you will be forgiven if some of you are rolling your eyes, or yawning, or worse. At a time when Europe and the rest of the world are flailing in response to the massive refugee...