An Introduction to Contemporary Metaethics provides a highly readable critical overview of the main arguments and themes in twentieth–century and contemporary metaethics. It traces the development of contemporary debates in metaethics from their beginnings in the work of G. E. Moore up to the most recent arguments between naturalism and non–naturalism, cognitivism and non–cognitivism. Individual chapters deal with: the open–question arguments and Moore’s attack on ethical naturalism; A. J. Ayer’s emotivism and the rejection of non–naturalism; Simon Blackburn’s quasi–realism; Allan Gibbard’s norm–expressivism; J. L. Mackie’s ‘error–theory’ of moral judgement; anti–realist and best opinion accounts of moral truth; the non–reductionist naturalism of the ‘Cornell realists’; Peter Railton’s naturalistic reductionism; the analytic functionalism of Frank Jackson and Philip Pettit; the contemporary non–naturalism of John McDowell and David Wiggins; and the debate between...