Why can it sometimes feel as though half the population is living in a different moral universe from you? Why do ideas such as 'fairness' and 'freedom' mean such different things to different people? Why is it so easy to see the flaws in others' arguments, and less in our own? Our intrinsic morality enabled us to form communities and create civilization, and it is the key to understanding political and religious divisions. It explains why some of us are liberal, others conservative. It is often the difference between war and peace. Morality binds and blinds, but with new evidence from his own empirical research, Haidt shows that it is possible to liberate ourselves from the disputes that divide good people and cooperate with those whose morals differ from our own. After all, they might just have something to say.