Why can it sometimes feel as though half the population is living in a moral universe? Why do ideas such as 'fairness' and 'freedom' mean such different things to different people? Why is it so hard to see things from another viewpoint? Why do we come to blows over politics and religion? This book answers these questions about human relationships.

Psychologist Haidt argues that we often find it hard to get along because our minds have evolved to be moralistic, judgemental and self-righteous. He explores how morality enables us to form communities, but that it's possible to liberate us from the disputes that divide good people. 'A fascinating voyage of discovery' Simon Jenkins, "Guardian"