Central banks have been in the news a lot lately, with Mario Draghi’s dramatic decision to redeploy the full range of unconventional policies alongside Jerome Powell’s more obvious ambivalence about loosening the monetary spigots. In part this is a function of timing. The business cycle is turning and yet central banks have not quite managed to reset their instruments after the last crisis. Part is also due to overload. Central banks have been ‘the only game in town’ for a long time, they have expanded responsibility for prudential oversight, and politicians seem none too eager to assume responsibility for macroeconomic performance. It would be a mistake, however, to focus too much on short term explanations. Three recent books explore some of the deeper forces that have pushed central bankers into the spotlight.