| Debating the Federal Marriage Amendment (2005) |
| Natural Law Liberalism (2004) |
| The Ethics of Cloning and Stem-Cell Research: the Embryo and Human Dignity (2003) |
| Moral Education through Law: The Possibilities and the Limits (2002) |
| Who Speaks For Liberalism? (2001) |
| Was the Historians’ Brief on Abortion a Falsification of History? (2000) |
| Public Morality Today (2000) |
| Contemporary Natural Law Interpretations (1999) |
| Natural Law, Traditional Morality, and the Sources of Disagreement (1998) |
| Natural Law, Liberalism, and Public Reason (1997) |
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