Martha Nussbaum continues to impress by the sheer energy of her engagement with all that it means to be human. In this wide-ranging but ultimately unsatisfying book, she sets out to fill in some of the gaps in the political reasoning of John Rawls by showing the importance of the emotions for human social functioning. Many would agree with Nussbaum that John Rawls’ Theory of Justice was “the twentieth century’s greatest work of political philosophy”. In Frontiers of Justice (2006) she pushed at the boundaries of Rawls’ theory, asking what it means for the disabled, the politically excluded and for animals. Now, she seeks a deeper account of the ways in which all human beings, with our quirky, messy, contradictory lives, can share in the sort of politically li