William White predicted the approaching financial crisis years before 2007's subprime meltdown. But central bankers preferred to listen to his great rival Alan Greenspan instead, with devastating consequences for the global economy. William White had a pretty clear idea of what he wanted to do with his life after shedding his pinstriped suit and entering retirement. White, a Canadian, worked for various central banks for 39 years, most recently serving as chief economist for the central bank for all central bankers, the Bank for International Settlements (BIS), headquartered in Basel, Switzerland. Then, after 15 years in the world's most secretive...