I managed to catch up with David Wessel, the Wall Street Journal economics editor, who has just published In Fed We Trust: Ben Bernanke’s War on the Great Panic. I doubted David could tell me anything more about the former Princeton professor I didn’t already know. I couldn’t have been more wrong, as David gave me some fascinating insights into the inner soul of our much vaunted chairman of the Federal Reserve. Bernanke was the smartest kid in rural Dillon, South Carolina, who, through a series of improbable accidents, ended up at Harvard. He built his career on studying the Great Depression, then the closest thing to paleontology economics had to offer, a field focused so distantly on the past that it was irrelevant. Bernanke took over the Fed when Greenspan was considered a rock star, inhaling his libertarian, free market, Ayn Rand inspired philosophy in great giant gulps. Within a year the landscape was suddenly overrun with T-Rex’s and Brontesauri. He tried to stop the panic 150 different ways, 125 of which were terrible ideas, the remaining 25 saving us from the Great Depression II. This is why unemployment is now only 10.2%, instead of 25%. The Fed governor is naturally a very shy and withdrawing person, and would have been quite happy limiting his political career to the local school board. But to rebuild confidence, he took his campaign to the masses, attending town hall meetings and meeting the public like a campaigning first term congressman. The price of his success has been large, with the Fed balance sheet exploding from $800 million to $2 trillion, solely on his signature. The true cost of the financial crisis won’t be known for a decade. Now that having pulled back from the brink, the biggest risk is that we grow complacent, and let desperately needed reforms of the system slide. How Bernanke unwinds this bubble will define his legacy. Too soon, and we go back into a real depression. Too late, and hyperinflation hits. That’s when we see how smart Bernanke really is.