Daron Acemoglu and James A. Robinson

Based on decades of research, this powerful new big-picture framework explains how some countries develop towards and provide liberty while others fall to despotism, anarchy or asphyxiating norms - and explains how liberty can thrive despite new threats. Liberty is hardly the 'natural' order of things; usually states have been either too weak to protect individuals or too strong for people to protect themselves from despotism. There is also a happy Western myth that where liberty exists, it's a steady state, arrived at by 'enlightenment'.

But liberty emerges only when a delicate and incessant balance is struck between state and society - between elites and citizens. This struggle becomes self-reinforcing, inducing both state and society to develop a richer array of capacities, thus affecting the peacefulness of societies, the success of economies and how people experience their daily lives.