Imagine: you are designing a society, but you don't know who you'll be within it - rich or poor, man or woman, gay or straight. What would you want that society to look like? This is the revolutionary thought experiment proposed by the twentieth century's greatest political philosopher, John Rawls. As economist and philosopher Daniel Chandler argues in this hugely ambitious and exhilarating intervention, it is by rediscovering Rawls that we can find a way out of the escalating crises that are devastating our world today. Chandler shows how we can protect free speech and transcend the culture wars; get money out of politics; and create an economy where everyone has the chance to fulfil their potential, where prosperity is widely shared, and which operates within the limits of our finite planet.