Clive Staples Lewis, commonly referred to as C. S. Lewis, was an Irish author and scholar. Lewis is known for his work on medieval literature, Christian apologetics, literary criticism and fiction. He is best known today for his series "The Chronicles of Narnia". Lewis was a close friend of J. R. R. Tolkien, the author of "The Lord of the Rings".

Hugo Grotius (Huig de Groot, or Hugo de Groot; Delft, 10 April 1583 - Rostock, 28 August 1645) worked as a jurist in the Dutch Republic and laid the foundations for international law, based on natural law. He was also a philosopher, Christian apologist, playwright, and poet.

Murray Newton Rothbard was a highly influential American economist, historian and natural law theorist belonging to the Austrian School of Economics who helped define modern libertarianism. Rothbard took the Austrian School's emphasis on spontaneous order and condemnation of central planning to an individualist anarchist conclusion, which he termed "anarcho-capitalism." He was son of David and Rae Rothbard.

John Finnis (born 1940), an Australian Professor of Law at University College, Oxford and the University of Notre Dame.

Robert P. George is McCormick Professor of Jurisprudence at Princeton University, where he teaches courses on constitutional interpretation, civil liberties and philosophy of law. He also serves as the director of the James Madison Program in American Ideals and Institutions. He was educated at Swarthmore College (BA), Harvard Law School (JD), Harvard Divinity School (MTS), and New College, Oxford (DPhil). At Oxford he studied under John Finnis and Joseph Raz.

Henry Drummond (August 17, 1851 - March 11, 1897), Scottish evangelical writer and lecturer, was born in Stirling. He was educated at Edinburgh University, where he displayed a strong inclination for physical and mathematical science. The religious element was an even more powerful factor in his nature, and disposed him to enter the Free Church of Scotland.

Germain Gabriel Grisez (born 1929) is a prominent and influential Catholic moral theologian. Grisez's lengthy masterpiece is his three volume "Way of the Lord Jesus". Grisez moves ably between the spheres of philosophy and theology, articulating a new form of natural law thinking, consonant with the teachings of the Roman Catholic magisterium. In the first of the three volumes, Christian Moral Principles, …

David Novak is a scholar of Jewish philosophy, law (Halakha) and ethics. He has rabbinical ordination and has trained with Catholic moral theologians. Trained at Georgetown University, Novak has taught at the University of Virginia and currently teaches at the University of Toronto. Novak has contributed to Jewish ethics by advocating a Jewish social ethics drawn from both the natural law tradition and Halakha.

William May is the Michael J. McGivney Professor of Moral Theology at the Pontifical John Paul II Institute for Studies on Marriage and Family at The Catholic University of America in Washington, DC. Along with John Finnis, Joseph Boyle, and Germain Grisez, he is one of the major proponents of new natural law theory, which draws strongly on the ethics of Thomas Aquinas.

Frank Van Dun (born 1947) is a Belgian law philosopher and libertarian natural law theorist.

Robert Alexy is a jurist and a philosopher. He studied law and philosophy in Göttingen. He received his PhD in 1976 with the dissertation "A Theory of Legal Argumentation", and he achieved his Habilitation in 1984 with a "Theory of Constitutional Rights"). Alexy's definition of law looks like a mix of Kelsen's normativism (which was an influential version of legal positivism) and Radbruch's legal naturalism (Alexy, 2002), …

Josef Fuchs, S.J. (1912-2005) was one of the most important Roman Catholic theologians of the 20th century. A German Jesuit priest, he taught at the Gregorian University in Rome for almost thirty years. While serving on the Pontifical Commission on Population, Family, and Birth from 1963-66, Fuchs experienced an intellectual conversion on two levels: his understanding on the issue of artificial means of birth control within marriage and his understanding of natural law, …

Alf Niels Christian Ross was a Danish legal and moral philosopher and scholar of international law. He is best known as the leading exponent of Scandinavian Legal Realism. Born in Copenhagen, Alf Ross graduated from high school in 1917. He studied law, graduating in 1922. He consequently worked in a barrister’s office. In 1923, he commenced a study tour, which would last for two and a half years, visiting France, England and Austria.

William Ray Overton (19 September 1939 - 14 July 1987) was a Judge on the U.S. District Court for the Eastern District of Arkansas. Born in Malvern, Arkansas, Overton was subsequently educated at the University of Arkansas and its School of Law. Upon graduation in 1964, he went into private practice. In 1979, Overton was appointed to his District Court by President Jimmy Carter and was confirmed by the Senate on 10 May. Overton held this post until his death in 1987.

Juan Ginés de Sepúlveda was a Spanish philosopher and theologian. He was the adversary of Bartolomé de las Casas in the Valladolid Controversy in 1550 concerning the justification of the Spanish Conquest of the Indies. Sepúlveda was the defender of the Spanish Empire's right of conquest, of colonization and of evangelization in the so-called New World. He opposed himself to the natural law philosophy of Francisco de Vitoria, a member of the School of Salamanca.

Carlos Santiago Nino was an Argentine moral, legal and political philosopher. Nino studied law at the University of Buenos Aires and at Oxford, where he received his Ph.D. in 1977 with a thesis directed by John Finnis and Tony Honoré. Nino began his academic activity in the early 1970s, concentrating on some traditional issues in jurisprudence, such as the concept of a legal system, the interpretation of the law, the debate between legal positivism and natural law, …

Raymond William ('Bill') Bradford was an American writer chiefly known for editing, publishing, and writing for the libertarian magazine "Liberty". He edited his first periodical, a short-lived mimeographed zine called "Eleutherian Forum", while a teenager. During the 1970s he developed a prosperous precious metals and numismatic business in Lansing, Michigan, Liberty Coin Service. He partially retired in 1980, moving to Port Townsend, …

Gottlieb Hufeland was a German economist and jurist. Born in Danzig (Gdańsk), Poland, Hufeland was educated at the gymnasium of his native town, and completed his university studies at Leipzig and Göttingen. He graduated at Jena, and in 1788 was there appointed to an extraordinary professorship. Five years later he was made ordinary professor.

Matthias Calonius was Finland's most renowned jurist. Born in Saarijärvi as a pastor's son, he studied at the Royal Academy of Turku. He went on to become a lecturer and then (in 1773) full professor at the Faculty of Law there, despite being too poor and lacking in family connections to ever obtain an academic title. He was also a member of the Supreme Court of Sweden in Stockholm and, after the Finnish War and Diet of Porvoo, …

Anton Martin Schweigaard was a Norwegian jurist and economic reformer. Born on 11 April, 1808 in Kragerø. He was a professor of jurisprudence and economics in the 1830s and 1840s and an extremely influential publicist for economic liberalism. He is widely credited in helping bring about Norway's change to a capitalist economy. From 1842 to 1869, he was a member of the Storting (Norwegian parliament). He died on 1 February, 1870 in Christiania.

José Castán Tobeñas was a Spanish jurist and judge. After studies in Zaragoza and a much-lauded doctoral thesis submitted in Madrid, he taught civil law at Zaragoza, Madrid, Murcia, Barcelona and Valencia. He was appointed to the Supreme Court in 1933, and dismissed in 1936 during the Spanish Civil War. In 1939, the Franco government appointed Tobeñas to a chair in Zaragoza and, in 1940, again to the Supreme Court, …