Originally published in German in 1936, The Natural Law is the first work to clarify the differences between traditional natural law as represented in the writings of Cicero, Aquinas, and Hooker and the revolutionary doctrines of natural rights espoused by Hobbes, Locke, and Rousseau. Beginning with the legacies of Greek and Roman life and thought, Rommen traces the natural law tradition to its displacement by legal positivism and concludes with what the author calls "the reappearance" of natural law thought in more recent times. In seven chapters each Rommen explores "The History of the Idea of Natural Law" and "The Philosophy and Content of the Natural Law." In his introduction, Russell Hittinger places Rommen's work in the context of contemporary debate on the relevance of natural law to philosophical inquiry and constitutional interpretation. Heinrich Rommen (1897–1967) taught in Germany and England before concluding his distinguished scholarly career at Georgetown University. Russell Hittinger is William K. Warren Professor of Catholic Studies and Research Professor of Law at the University of Tulsa.

Knowing the Natural Law traces the thought of Aquinas from an understanding of human nature to a knowledge of the human good, from there to an account of ought-statements, and finally to choice, which issues in human actions. The much discussed article on the precepts of the natural law (I-II, 94, 2) provides the framework for a natural law rooted in human nature and in speculative knowledge. Practical knowledge is itself threefold: potentially practical knowledge, virtually practical knowledge, and fully practical knowledge.

The theory of natural law grounds human laws in the universal truths of God’s creation. Until very recently, lawyers in the Western tradition studied natural law as part of their training, and the task of the judicial system was to put its tenets into concrete form, building an edifice of positive law on natural law’s foundations. Although much has been written about natural law in theory, surprisingly little has been said about how it has shaped legal practice. Natural Law in Court asks how lawyers and judges made and interpreted natural law arguments in England, Europe, and the United States, from the beginning of the sixteenth century to the American Civil War. R. H. Helmholz sees a remarkable consistency in how English, Continental, and early American jurisprudence understood and applied natural law in cases ranging from family law and inheritance to criminal and commercial law. Despite differences in their judicial systems, natural law was treated across the board as the source of positive law, not its rival. The idea that no person should be condemned without a day in court, or that penalties should be proportional to the crime committed, or that self-preservation confers the right to protect oneself against attacks are valuable legal rules that originate in natural law. From a historical perspective, Helmholz concludes, natural law has advanced the cause of justice.

Has Hobbesian moral and political theory been fundamentally misinterpreted by most of his readers? Since the criticism of John Bramhall, Hobbes has generally been regarded as advancing a moral and political theory that is antithetical to classical natural law theory. Kody W. Cooper challenges this traditional interpretation of Hobbes in Thomas Hobbes and the Natural Law. Hobbes affirms two essential theses of classical natural law theory: the capacity of practical reason to grasp intelligible goods or reasons for action and the legally binding character of the practical requirements essential to the pursuit of human flourishing. Hobbes’s novel contribution lies principally in his formulation of a thin theory of the good. This book seeks to prove that Hobbes has more in common with the Aristotelian-Thomistic tradition of natural law philosophy than has been recognized. According to Cooper, Hobbes affirms a realistic philosophy as well as biblical revelation as the ground of his philosophical-theological anthropology and his moral and civil science. In addition, Cooper contends that Hobbes's thought, although transformative in important ways, also has important structural continuities with the Aristotelian-Thomistic tradition of practical reason, theology, social ontology, and law. What emerges from this study is a nuanced assessment of Hobbes’s place in the natural law tradition as a formulator of natural law liberalism. This book will appeal to political theorists and philosophers and be of particular interest to Hobbes scholars and natural law theorists.

Presents a systematic, contemporary defence of the natural law outlook in ethics, politics and jurisprudence.

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.

Natural law, according to Thomas Aquinas, has its foundation in the evidence and operation of natural, human reason. Its primary precepts are self-evident. Awareness of these precepts does not presuppose knowledge of, or even belief in, the existence of God. The most interesting criticisms of Thomas Aquinas’s natural-law teaching in modern times have been advanced by the political philosopher Leo Strauss and his followers. The purpose of this book is to show that these criticisms are based on misunderstandings and that they are inconclusive at best. Thomas Aquinas’s natural-law teaching is fully rational. It is accessible to man as man.

Kenneth R. Westphal presents an original interpretation of Hume's and Kant's moral philosophies, the differences between which are prominent in current philosophical accounts. Westphal argues that focussing on these differences, however, occludes a decisive, shared achievement: a distinctive constructivist method to identify basic moral principles and to justify their strict objectivity, without invoking moral realism nor moral anti-realism or irrealism. Their constructivism is based on Hume's key insight that 'though the laws of justice are artificial, they are not arbitrary'. Arbitrariness in basic moral principles is avoided by starting with fundamental problems of social coördination which concern outward behaviour and physiological needs; basic principles of justice are artificial because solving those problems does not require appeal to moral realism (nor to moral anti-realism). Instead, moral cognitivism is preserved by identifying sufficient justifying reasons, which can be addressed to all parties, for the minimum sufficient legitimate principles and institutions required to provide and protect basic forms of social coördination (including verbal behaviour). Hume first develops this kind of constructivism for basic property rights and for government. Kant greatly refines Hume's construction of justice within his 'metaphysical principles of justice', whilst preserving the core model of Hume's innovative constructivism. Hume's and Kant's constructivism avoids the conventionalist and relativist tendencies latent if not explicit in contemporary forms of moral constructivism.

This book proposes a rather novel legal-philosophical approach to understanding the intersection between law and morality. It does so by analyzing the conditions for the existence of a juridical domain of natural law from the perspective of the tradition of Thomistic juridical realism. In order to highlight the need to reconnect with this tradition in the context of contemporary legal philosophy, the book presents various other recent jurisprudential positions regarding the overlap between law and morality. While most authors either exclude a conceptual necessity for the inclusion of moral principles in the nature of law or refer to the purely moral status of natural law at the foundations of the legal phenomenon, the book seeks to elucidate the essential properties of the juridical status of natural law. In order to establish the juridicity of natural law, the book explores the relevant arguments of Thomas Aquinas and some of his main commentators on this issue, above all Michel Villey and Javier Hervada. It establishes that Thomistic juridical realism observes the juridical phenomenon not only from the perspective of legal norms or subjective individual rights, but also from the perspective of the primary meaning of the concept of right (ius), namely, the just thing itself as the object of justice. In this perspective, natural rights already possess a fully juridical status and can be described as natural juridical goods. In addition, from the viewpoint of Thomistic juridical realism, we can identify certain natural norms or principles of justice as the juridical title of these rights or goods. The book includes an assessment of the prospective points of dialogue with the other trends in Thomistic legal philosophy as well as with various accounts of the nature of law in contemporary legal theory.

This collection of essays focuses on key questions debated by Greek and Roman philosophers of the Hellenistic period.