Abstract

In this interesting book, Marcel Lieberman develops a novel and sustained argument for moral realism. He focuses on the psychological phenomenon of commitment, and argues that commitments psychologically require realist beliefs: paradigmatically, one cannot be committed to, say, social equality, without believing that social equality is genuinely valuable. In so arguing, he disagrees with those, on both sides of the debate over moral realism, who have argued that moral realism makes little practical difference. He draws on and criticizes a number of important and influential figures, most particularly Rorty, Gibbard and Velleman, but his range of reference goes well beyond familiar figures in contemporary metaethics, taking in also inter alii Ricoeur, Gabriel Marcel, and rational expectations theorists in economics.