First published in 1980, Natural Law and Natural Rights is widely heralded as a seminal contribution to the philosophy of law, and an authoritative restatement of natural law doctrine. It has offered generations of students and other readers a thorough grounding in the central issues of legal, moral, and political philosophy from Finnis's distinctive perspective. This new edition includes a substantial postscript by the author, in which he responds to thirty years of discussion, criticism and further work in the field to develop and refine the original theory. The book closely integrates the philosophy of law with ethics, social theory and political philosophy. The author develops a sustained and substantive argument; it is not a review of other people's arguments but makes frequent illustrative and critical reference to classical, modern, and contemporary writers in ethics, social and political theory, and jurisprudence.