Natural law

**Natural law** is a philosophy asserting that certain rights are inherent by virtue of human nature, endowed by nature—traditionally by God or a transcendent source—and that these can be understood universally through human reason. As determined by nature, the **law of nature** is implied to be objective and universal; it exists independently of human understanding, and of the positive law of a given state, political order, legislature or society at large.

Historically, natural law refers to the use of reason to analyze human nature to deduce binding rules of moral behavior from nature's or God's creation of reality and mankind. The concept of natural law was documented in ancient Greek philosophy, including Aristotle, and was referred to in Roman philosophy by Cicero. References to natural law are also found in the Old and New Testaments of the Bible, later expounded upon in the Middle Ages by Christian philosophers such as Albert the Great and Thomas Aquinas. The School of Salamanca made notable contributions during the Renaissance. Modern natural law theories were greatly developed in the Age of Enlightenment, combining inspiration from Roman law with philosophies like social contract theory. Key proponents were Alberico Gentili, Francisco Suárez, Richard Hooker, Thomas Hobbes, Hugo Grotius, Samuel von Pufendorf, Matthew Hale, John Locke, Francis Hutcheson, Jean Jacques Burlamaqui, Emmerich de Vattel, Cesare Beccaria and Francesco Mario Pagano. It was used to challenge the divine right of kings, and became an alternative justification for the establishment of a social contract, positive law, and government—and thus legal rights—in the form of classical republicanism. Conversely, the concept of natural rights is used by others to challenge the legitimacy of all such establishments.

Contemporarily, the concept of natural law is closely related to the concept of natural rights. Indeed, many philosophers, jurists and scholars use natural law synonymously with natural rights, or natural justice. while others distinguish between natural law and natural right.

Because of the intersection between natural law and natural rights, natural law has been claimed or attributed as a key component in the *United States Declaration of Independence* (1776), the *Declaration of the Rights of Man and of the Citizen* (1789) of France, the *Universal Declaration of Human Rights* (1948) of the United Nations General Assembly, as well as the *European Convention on Human Rights* (1953) of the Council of Europe.

## Contemporary jurisprudence

In jurisprudence, *natural law* can refer to the several doctrines:

* That just laws are immanent in nature; that is, they can be "discovered" or "found" but not "created" by such things as a bill of rights;
* That they can emerge by the natural process of resolving conflicts, as embodied by the evolutionary process of the common law; or
* That the meaning of law is such that its content cannot be determined except by reference to moral principles. These meanings can either oppose or complement each other, although they share the common trait that they rely on inherence as opposed to design in finding just laws.

Whereas legal positivism would say that a law can be unjust without it being any less a law, a natural law jurisprudence would say that there is something legally deficient about an unjust norm. Legal interpretivism, famously defended in the English-speaking world by Ronald Dworkin, claims to have a position different from both natural law and positivism.

Besides utilitarianism and Kantianism, natural law jurisprudence has in common with virtue ethics that it is a live option for a first principles ethics theory in analytic philosophy.

The concept of natural law was very important in the development of the English common law. In the struggles between Parliament and the monarch, Parliament often made reference to the Fundamental Laws of England, which were at times said to embody natural law principles since time immemorial and set limits on the power of the monarchy. According to William Blackstone, however, natural law might be useful in determining the content of the common law and in deciding cases of equity, but was not itself identical with the laws of England. Nonetheless, the implication of natural law in the common law tradition has meant that the great opponents of natural law and advocates of legal positivism, like Jeremy Bentham, have also been staunch critics of the common law.

Natural law jurisprudence is currently undergoing a period of reformulation (as is legal positivism). The most prominent contemporary natural law jurist, Australian John Finnis, is based in Oxford, but there are also Americans Germain Grisez, Robert P. George, and Canadian Joseph Boyle and Brazilian Emídio Brasileiro. All have tried to construct a new version of natural law. The 19th-century anarchist and legal theorist, Lysander Spooner, was also a figure in the expression of modern natural law.

"New Natural Law" as it is sometimes called, originated with Grisez. It focuses on "basic human goods", such as human life, knowledge, and aesthetic experience, which are self-evidently and intrinsically worthwhile, and states that these goods reveal themselves as being incommensurable with one another.

The tensions between the natural law and the positive law have played, and continue to play a key role in the development of international law.