Jurisprudence, also known as theory of law or philosophy of law, is the examination in a general perspective of what law is and what it ought to be. It investigates issues such as the definition of law; legal validity; legal norms and values; as well as the relationship between law and other fields of study, including economics, ethics, history, sociology, and political philosophy.
Moral realism is the position that ethical sentences express propositions that refer to objective features of the world, some of which may be true to the extent that they report those features accurately. This makes moral realism a non-nihilist form of ethical cognitivism with an ontological orientation, standing in opposition to all forms of moral anti-realism and moral skepticism, including ethical subjectivism, error theory, and non-cognitivism. Moral realism's two main subdivisions are ethical naturalism and ethical non-naturalism.
In jurisprudence and legal philosophy, legal positivism is the theory that the existence of the law and its content depend on social facts, such as acts of legislation, judicial decisions, and customs, rather than on morality. This contrasts with natural law theory, which holds that law is necessarily connected to morality in such a way that any law that contradicts morality lacks legal validity.
In the philosophy of law, virtue jurisprudence is the set of theories of law related to virtue ethics. By making the aretaic turn in legal theory, virtue jurisprudence focuses on the importance of character and human excellence or virtue to questions about the nature of law, the content of the law, and judging.
The indeterminacy debate in legal theory can be summed up as follows: Can the law constrain the results reached by adjudicators in legal disputes? Some members of the critical legal studies movement — primarily legal academics in the United States — argued that the answer to this question is "no." Another way to state this position is to suggest that disputes cannot be resolved with clear answers, and thus there is at least some amount of uncertainty in legal reasoning and its application to disputes. A given body of legal doctrine is said to be "indeterminate" by demonstrating that every legal rule in that body of legal doctrine is opposed by a counterrule that can be used in a process of legal reasoning.
Legal realism is a naturalistic approach to law; it is the view that jurisprudence should emulate the methods of natural science; that is, it should rely on empirical evidence. Hypotheses must be tested against observations of the world.
Ronald Myles Dworkin was an American legal philosopher, jurist, and scholar of United States constitutional law. At the time of his death, he was Frank Henry Sommer Professor of Law and Philosophy at New York University and Professor of Jurisprudence at University College London. Dworkin had taught previously at Yale Law School and the University of Oxford, where he was the Professor of Jurisprudence, successor to philosopher H. L. A. Hart.
Herbert Lionel Adolphus Hart was an English legal philosopher. One of the most influential legal theorists of the 20th century, he was instrumental in the development of the theory of legal positivism, which was popularised by his book, The Concept of Law. Hart's contributions focused on the nature of law, the relationship between law and morality, and the analysis of legal rules and systems, introducing concepts such as the "rule of recognition" that have shaped modern legal thought.
Lon Luvois Fuller was an American legal philosopher best known as a proponent of a secular and procedural form of natural law theory. Fuller was a professor of law at Harvard Law School for many years, and is noted in American law for his contributions to both jurisprudence and the law of contracts. His 1958 debate with the British legal philosopher H. L. A. Hart in the Harvard Law Review was important in framing the modern conflict between legal positivism and natural law theory. In his widely discussed 1964 book The Morality of Law, Fuller argues that all systems of law contain an "internal morality" that imposes on individuals a presumptive obligation of obedience. Robert S. Summers said in 1984: "Fuller was one of the four most important American legal theorists of the last hundred years".
Jeremy Waldron is a New Zealand legal philosopher. He holds a University Professorship at the New York University School of Law, is affiliated with the New York University Department of Philosophy, and was formerly the Chichele Professor of Social and Political Theory at All Souls College, Oxford University. Waldron also holds an adjunct professorship at Victoria University of Wellington. Waldron is regarded as one of the world's leading legal and political philosophers.
Joseph Raz was an Israeli legal, moral and political philosopher. He was an advocate of legal positivism and is known for his conception of perfectionist liberalism. Raz spent most of his career as a professor of philosophy of law at Balliol College, Oxford, and was latterly a part-time professor of law at Columbia University Law School and a part-time professor at King's College London. He received the Tang Prize in Rule of Law in 2018.
Conventionalism is the philosophical attitude that fundamental principles of a certain kind are grounded on agreements in society, rather than on external reality. Unspoken rules play a key role in the philosophy's structure. Although this attitude is commonly held with respect to the rules of grammar, its application to the propositions of ethics, law, science, biology, mathematics, and logic is more controversial.
The Hart–Fuller debate is an exchange between the American law professor Lon L. Fuller and his English counterpart H. L. A. Hart, published in the Harvard Law Review in 1958 on morality and law, which demonstrated the divide between the positivist and natural law philosophy. Hart took the positivist view in arguing that morality and law were separate. Fuller's reply argued for morality as the source of law's binding power.
Brian Leiter is an American philosopher and legal scholar who is Karl N. Llewellyn Professor of Jurisprudence at the University of Chicago Law School and founder and Director of Chicago's Center for Law, Philosophy & Human Values. A review in Notre Dame Philosophical Reviews described Leiter as "one of the most influential legal philosophers of our time", while a review in The Journal of Nietzsche Studies described Leiter's book Nietzsche on Morality (2002) as "arguably the most important book on Nietzsche's philosophy in the past twenty years."
This is an index of articles in jurisprudence.
International legal theory, or theories of international law, comprise a variety of theoretical and methodological approaches used to explain and analyse the content, formation and effectiveness of international law and institutions and to suggest improvements. Some approaches center on the question of compliance: why states follow international norms in the absence of a coercive power that ensures compliance. Other approaches focus on the problem of the formation of international rules: why states voluntarily adopt international legal norms, that limit their freedom of action, in the absence of a world legislature. Other perspectives are policy oriented; they elaborate theoretical frameworks and instruments to criticize the existing rules and make suggestions on how to improve them. Some of these approaches are based on domestic legal theory, others are interdisciplinary, while others have been developed expressly to analyse international law.
Law's Empire is a 1986 text in legal philosophy by Ronald Dworkin, in which the author continues his criticism of the philosophy of legal positivism as promoted by H.L.A. Hart during the middle to late 20th century. The book introduces Dworkin's Judge Hercules as an idealized version of a jurist with extraordinary legal skills who is able to challenge various predominating schools of legal interpretation and legal hermeneutics prominent throughout the 20th century. Judge Hercules is eventually challenged by Judge Hermes, another idealized version of a jurist who is affected by an affinity to respecting historical legal meaning arguments which do not affect Judge Hercules in the same manner. Judge Hermes' theory of legal interpretation is found by Dworkin in the end to be inferior to the approach of Judge Hercules.
Kenneth Einar Himma is an American philosopher, author, lawyer, academic and lecturer.
David Enoch is an ethicist and philosopher of law with research interests in moral, political and legal philosophy within the analytic tradition. He is the co-director of the Center for Moral and Political Philosophy and has been the Rodney Blackman Chair in the Philosophy of Law at the Hebrew University of Jerusalem since 2005. He received his Bachelor of Arts in philosophy and Bachelor of Laws degrees from Tel Aviv University in 1993. He then completed his PhD in philosophy at New York University in 2003.
Experimental jurisprudence (X-Jur) is an emerging field of legal scholarship that explores the nature of legal phenomena through psychological investigations of legal concepts. The field departs from traditional analytic legal philosophy in its ambition to elucidate common intuitions in a systematic fashion employing the methods of social science. Equally, unlike research in legal psychology, X-Jur emphasises the philosophical implications of its findings, such as whether, how, and in what respects the law's content is a matter of moral perspective. Whereas some legal theorists have welcomed X-Jur's emergence, others have expressed reservations about the contributions it seeks to make.
