The "third pillar" of the title is the community we live in. Economists all too often understand their field as the relationship between markets and the state, and they leave squishy social issues for other people. That's not just myopic, Rajan argues; it's dangerous. All economics is actually socioeconomics - all markets are embedded in a web of human relations, values and norms. As he shows, throughout history, technological phase shifts have ripped the market out of those old webs and led to violent backlashes, and to what we now call populism. Eventually, a new equilibrium is reached, but it can be ugly and messy, especially if done wrong. Right now, we're doing it wrong. As markets scale up, the state scales up with it, concentrating economic and political power in flourishing central hubs and leaving the periphery to decompose, figuratively and even literally. Instead, Rajan offers a way to rethink the relationship between the market and civil society and argues for a return to strengthening and empowering local communities as an antidote to growing despair and unrest. Rajan is not a doctrinaire conservative, so his ultimate argument that decision-making has to be devolved to the grass roots or our democracy will continue to wither, is sure to be provocative. But even setting aside its solutions, The Third Pillar is a masterpiece of explication, a book that will be a classic of its kind for its offering of a wise, authoritative and humane explanation of the forces that have wrought such a sea change in our lives.