This collection of original essays by leading metaethicists will advance the ongoing debates about various forms of moral skepticism by drawing on recent innovative work on moral disagreement, moral knowledge and justification, moral error theory, moral fictionalism, moral phenomenology, moral psychology, and evolutionary debunking of morality.

Diego E. Machuca is Researcher in Philosophy at CONICET (Argentina) and co-editor of the International Journal for the Study of Skepticism. He is also sole editor of Pyrrhonism in Ancient, Modern, and Contemporary Philosophy (2011), New Essays on Ancient Pyrrhonism (2011), and Disagreement and Skepticism (Routledge, 2013), and co-editor of two other volumes on skepticism.

1. Moral Skepticism: An Introduction and Overview

Diego E. Machuca

2. Projection, Indeterminacy and Moral Skepticism

Hallvard Lillehammer

3. Error Theory, Relaxation and Inferentialism

Christine Tiefensee

4. Why We Really Cannot Believe the Error Theory

Bart Streumer

5. Are There Substantive Moral Conceptual Truths?

David Copp

6. The Phenomenology of Moral Authority

Terry Horgan & Mark Timmons

7. Arguments from Moral Disagreement to Skepticism

Richard Joyce

8. Evolutionary Debunking, Realism and Anthropocentric Metasemantics

Mark van Roojen

9. Moral Skepticism and the Benacerraf Challenge

Folke Tersman

10. Veneer Theory

Aaron Zimmerman

11. Moral Skepticism, Fictionalism, and Insulation

Diego E. Machuca