The Ego and His Own

A doctoral study of moral error theory, the view that moral claims are never true. It explains Mackie's original argument, tests the versions of Joyce and Olson, and asks what we should do with morality if the error theorist is right.

Emma Beckman

A readable thesis on J. L. Mackie's case that all moral claims are false. It sets out the argument from queerness and the main objections, ideal if you want to understand moral nihilism as a precise philosophical position.

Matt Gustafson

Moral nihilism says value judgments can never be justified. This thesis takes the claim seriously and answers it with pragmatism, showing how moral beliefs can be reasonable without objective moral facts behind them.

J.P. Weismuller