This volume contains the seminal articles that define the influence of Aquinas within legal philosophical thought. A comprehensive reference for those new to the field, it covers such topics as the relation of virtue to law, the common good, natural law, natural rights and property rights; together with social and political issues like abortion, feminism, homosexuality, environment, civil disobedience and just war. Attention is devoted to the new natural law theory and its limitations, as well as the place of historical context in the recovery of social thought.