This title presents an insight into moral skepticism of the 20th century. The author argues that our every-day moral codes are an 'error theory' based on the presumption of moral facts which, he persuasively argues, don't exist. His refutation of such facts is based on their metaphysical 'queerness'[...]

Hume's moral theory was the most important contribution to the sustained debate among the British Moralists of the 17th and 18th centuries. J. L. Mackie's classic text examines this debate and provides an excellent introduction to some of the main problems of moral philosophy.[...]