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.

An exploration of how the Ten Commandments have been understood throughout history.

Resorting to natural law is one way of conveying the philosophical conviction that moral norms are not merely conventional rules. Accordingly, the notion of natural law has a clear metaphysical dimension, since it involves the recognition that human beings do not conceive themselves as sheer products of society and history. And yet, if natural law is to be considered the fundamental law of practical reason, it must show also some intrinsic relationship to history and positive law. The essays in this book examine this tension between the metaphysical and the practical and how the philosophical elaboration of natural law presents this notion as a "limiting-concept", between metaphysics and ethics, between the mutable and the immutable; between is and ought, and, in connection with the latter, even the tension between politics and eschatology as a double horizon of ethics. This book, contributed to by scholars from Europe and America, is a major contribution to the renewed interest in natural law. It provides the reader with a comprehensive overview of natural law, both from a historical and a systematic point of view. It ranges from the mediaeval synthesis of Aquinas through the early modern elaborations of natural law, up to current discussions on the very possibility and practical relevance of natural law theory for the contemporary mind.

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.

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.

Modern society is riven by social divisions: between conservatives and progressives; liberals and socialists; the mainstream and the rise of far-right political groups etc. Instead of truth, there are 'post-truth' and 'alternative facts'. In the wake of problems caused by untruthful politicians and world leaders, by Brexit and Covid, the need to repair or rebuild our communities has become paramount, but what kind of community should we build, and on what foundations? This book suggests that natural law is such a foundation. Natural Law and Modern Society presents a new theory of natural law, grounded in the thought of Saint Thomas Aquinas, aimed at answering questions relevant to the world of today: from the nature of morality and ethics to the theory of law, obligation and political authority; from the domestic realm to international community. It seeks to elicit from the natural law tradition timeless truths concerning the human condition, in particular the social and political dimensions to human existence. This mode of existence, it argues, is not a problem to be resolved through some permutation of political institutions, but a predicament to be managed. At the heart of the book is the identification of a 'core morality': a set of moral requirements that are foundational to every society at all places and times, as distinct from those standards that are particular to this or that society at some time.

Aquinas's discussions of moral issues are extensive, and range well beyond the narrowly defined set of issues in the modern tradition of moral philosophy. This volume explores the ethical dimensions of a wide selection of philosophical and theological topics in Aquinas's texts. It covers topics central to ethics, such as happiness, moral virtue, and natural law, as well as related topics pertaining to the metaphysical basis of Aquinas's account of goodness, the ramifications of his ethical concerns for his philosophy of language, and the significance of his philosophical psychology for his ethics. The volume is divided into three sections focusing, respectively, on issues concerning moral theory and moral theology, moral psychology and practical reason, and moral theory in philosophy of language and metaphysics. The authors—distinguished scholars of medieval philosophy—bring to these issues a variety of approaches and viewpoints. By creatively sampling the breadth of Aquinas's reflections on ethical issues and exploring some of the significant connections that tie his moral thought to other parts of his philosophical and theological system, they display the richness and depth of Aquinas's moral thinking.