- Knowledge, Reality, and Value: A Mostly Common Sense Guide to Philosophy
- Epistemology: Contemporary Readings (Routledge Contemporary Readings in Philosophy)
- The Problem of Political Authority: An Examination of the Right to Coerce and the Duty to Obey
- Ethical Intuitionism
- Skepticism and the Veil of Perception (Studies in Epistemology and Cognitive Theory (Unnumbered).)