The "natural law" worldview developed over the course of almost two thousand years beginning with Plato and Aristotle and culminating with St. Thomas Aquinas in the thirteenth century. This tradition holds that the world is ordered, intelligible and good, that there are objective moral truths which we can know and that human beings can achieve true happiness only by following our inborn nature, which draws us toward our own perfection. Most accounts of the natural law are based on a God-centered understanding of the world. After the Natural Law traces this tradition from Plato and Aristotle to Thomas Aquinas and then describes how and why modern philosophers such as Descartes, Locke and Hobbes began to chip away at this foundation. The book argues that natural law is a necessary foundation for our most important moral and political values – freedom, human rights, equality, responsibility and human dignity, among others. Without a theory of natural law, these values lose their coherence: we literally cannot make sense of them given the assumptions of modern philosophy. Part I of the book traces the development of natural law theory from Plato and Aristotle through the crowning achievement of Thomas Aquinas. Part II explores how modern philosophers have systematically chipped away at the only coherent foundation for these values. As a result, our most important moral and political ideals today are incoherent. Modern political and moral thinkers have been led either to dilute the meaning of such terms as freedom or the moral good – or abandon these ideas altogether. Thus, modern philosophy and political thought are leading us either toward anarchy or totalitarianism. The conclusion, entitled "Why God Matters", shows how even the philosophical assumptions of the natural law depend on a personal God.

Translation of: Dio e la legge naturale: una rilettura di Tommaso d'Aquino.

To explore and evaluate the current revival, this volume brings together many of the foremost scholars on natural law. They examine the relation between Thomistic natural law and the larger philosophical and theological tradition. Furthermore, they assess the contemporary relevance of St. Thomas's natural law doctrine to current legal and political philosophy.

Aristotle and Natural Law lays out a new theoretical approach which distinguishes between the notions of 'interpretation,' 'appropriation,' 'negotiation' and 'reconstruction' of the meaning of texts and their component concepts. These categories are then deployed in an examination of the role which the concept of natural law is used by Aristotle in a number of key texts. The book argues that Aristotle appropriated the concept of natural law, first formulated by the defenders of naturalism in the 'nature versus convention debate' in classical Athens. Thereby he contributed to the emergence and historical evolution of the meaning of one of the most important concept in the lexicon of Western political thought. Aristotle and Natural Law argues that Aristotle's ethics is best seen as a certain type of natural law theory which does not allow for the possibility that individuals might appeal to natural law in order to criticize existing laws and institutions. Rather its function is to provide them with a philosophical justification from the standpoint of Aristotle's metaphysics.

Intractable moral disagreements / Alasdair MacIntyre -- Does the natural law provide a universally valid morality? / Jean Porter -- Moral disagreement and interreligious conversation : the penitential pace of understanding / David A. Clairmont -- Prophetic rhetoric and moral disagreement / M. Cathleen Kaveny -- After intractable moral disagreement : the Catholic roots of an ethic of political reconciliation / Daniel Philpott -- Moral disagreement and the limits of reason : refections on Macintyre and Ratzinger / Gerald McKenny -- Ultimate ends and incommensurable lives in Aristotle / Kevin L. Flannery -- The foundation of human rights and canon law / John J. Coughlin -- The fearful thoughts of mortals : Aquinas on confict, self-knowledge, and the virtues of practical reasoning / Thomas Hibbs -- From answers to questions : a response to the responses / Alasdair MacIntyre.

From Human Dignity to Natural Law shows how the whole of the natural law, as understood in the Aristotelian Thomistic tradition, is contained implicitly in human dignity. Human dignity means existing for one’s own good (the common good as well as one’s individual good), and not as a mere means to an alien good. But what is the true human good? This question is answered with a careful analysis of Aristotle’s definition of happiness. The natural law can then be understood as the precepts that guide us in achieving happiness. To show that human dignity is a reality in the nature of things and not a mere human invention, it is necessary to show that human beings exist by nature for the achievement of the properly human good in which happiness is found. This implies finality in nature. Since contemporary natural science does not recognize final causality, the book explains why living things, as least, must exist for a purpose and why the scientific method, as currently understood, is not able to deal with this question. These reflections will also enable us to respond to a common criticism of natural law theory: that it attempts to derive statements of what ought to be from statements about what is. After defining the natural law and relating it to human or positive law, Richard Berquist considers Aquinas’s formulation of the first principle of the natural law. It then discusses the love commandments to love God above all things and to love one’s neighbor as oneself as the first precepts of the natural law. Subsequent chapters are devoted to clarifying and defending natural law precepts concerned with the life issues, with sexual morality and marriage, and with fundamental natural rights. From Human Dignity to Natural Law concludes with a discussion of alternatives to the natural law.

Author Alberto M. Piedra lucidly illustrates the notion of 'natural law' through the examination of economic, social, political, and cultural issues. In this work Piedra draws on classical and Christian sources as well as his personal experience as an economist, diplomat, and lecturer on world politics to address philosophical views in a constructive and morally guided exegesis of natural law and economics. This innovative book shows the value of appeals to a governing, natural law and attendant principles such as the common good, subsidiarity, hierarchy, spiritual welfare, the reciprocity of freedom and authority, and the cultivation of personal moral and intellectual virtue. Natural Law will appeal to scholars, professionals, and others interested in the cultivation of personal moral and intellectual virtue.