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'''Natural law''' or the '''law of nature''' ([[Latin]] ''lex naturalis'') is an ethical theory whose supporters include [[Aristotle]], [[Thomas Aquinas]] and the [[Catholic Church]]. It is a law whose content is set by [[nature]], and that therefore has validity everywhere.<ref>"Natural Law," ''International Encyclopedia of the Social Sciences''.</ref> The phrase natural law is sometimes opposed to the [[positive law]] of a given political community, [[society]], or [[nation-state]], and can thus function as a standard by which to criticize that law. In natural law jurisprudence, on the other hand, the content of positive law cannot be known without some reference to the natural law (or something like it); natural law, used in this sense, can be evoked to criticize decisions about the statutes, but less so to criticize the law itself. Natural law can be used synonymously with [[natural justice]] or natural right ([[Latin]] ''ius naturale''), although most contemporary political and legal theorists separate the two.

Natural law theories have exercised a profound influence on the development of [[England|English]] [[common law]]<ref>Blackstone, ''Commentaries on the Laws of England''</ref>, and have featured greatly in the [[philosophy|philosophies]] of [[Thomas Aquinas]], [[Francisco Suárez]], [[Thomas Hobbes]], [[Hugo Grotius]], [[Samuel von Pufendorf]], and [[John Locke]]. Because of the intersection between natural law and [[natural rights]], it has been cited as a component in [[Declaration of Independence (United States)|United States Declaration of Independence]].

== History ==
The use of natural law, in its various incarnations, has varied widely through its history. There are a number of different theories of natural law, differing from each other with respect to the role that morality plays in determining the authority of legal norms. This article will deal with its usages separately rather than attempt to give a single concept that ties them all together.

===Aristotle===
[[Greek philosophy]] emphasized the distinction between "nature" (''physis'', ''φúσις'') on the one hand and "law", "custom", or "convention" (''nomos'', ''νóμος'') on the other. What the law commanded varied from place to place, but what was "by nature" should be the same everywhere. A "law of nature" would therefore have had the flavor more of a paradox than something which obviously existed.<ref>"Natural Law," ''International Encyclopedia of the Social Sciences''</ref> Against the [[conventionalism]] that the distinction between nature and custom could engender, [[Socrates]] and his philosophic heirs, [[Plato]] and [[Aristotle]], posited the existence of [[natural justice]] or natural right (''dikaion physikon'', ''δικαιον φυσικον'', [[Latin]] ''ius naturale''). Of these, Aristotle is often said to be the father of natural law.<ref>Shellens, "Aristotle on Natural Law."</ref>

Aristotle's association with natural law is due largely to the interpretation given to his works by [[Thomas Aquinas]].<ref>Jaffa, ''Thomism and Aristotelianism''.</ref> This was based on Aquinas's conflation of natural law and natural right, the latter of which Aristotle posits in Book V of the ''[[Nicomachean Ethics]]'' (= Book IV of the ''[[Eudemian Ethics]]''). Aquinas's influence was such as to affect a number of early translations of these passages,<ref>H. Rackham, trans., ''Nicomachean Ethics'', Loeb Classical Library; J. A. K. Thomson, trans. (revised by Hugh Tedennick), ''Nicomachean Ethics'', Penguin Classics.</ref> though more recent translations render them more literally.<ref>Joe Sachs, trans., ''Nicomachean Ethics'', Focus Publishing</ref> Aristotle notes that [[natural justice]] is a species of political justice, viz. the scheme of [[distributive justice|distributive]] and [[restorative justice|corrective justice]] that would be established under the best political community;<ref>''Nicomachean Ethics'', Bk. V, ch. 6–7.</ref> were this to take the form of law, this could be called a natural law, though Aristotle does not discuss this and suggests in the ''[[Politics (Aristotle)|Politics]]'' that the best regime may not rule by law at all.<ref>''Politics'', Bk. III, ch. 16.</ref>

The best evidence of Aristotle's having thought there was a natural law comes from the ''[[Rhetoric (Aristotle)|Rhetoric]]'', where Aristotle notes that, aside from the "particular" laws that each people has set up for itself, there is a "common" law that is according to nature.<ref>''Rhetoric'' 1373b2–8.</ref> The context of this remark, however, suggests only that Aristotle advised that it could be rhetorically advantageous to appeal to such a law, especially when the "particular" law of one's own city was averse to the case being made, not that there actually was such a law;<ref>Shellens, "Aristotle on Natural Law," 75–81</ref> Aristotle, moreover, considered two of the three candidates for a universally valid, natural law provided in this passage to be wrong.<ref>"Natural Law," ''International Encyclopedia of the Social Sciences''.</ref> Aristotle's theoretical paternity of the natural law tradition is consequently disputed.

===Stoic natural law===
The development of this tradition of [[natural justice]] into one of natural law is usually attributed to the [[Stoicism|Stoics]]. Whereas the "higher" law to which Aristotle suggested one could appeal was emphatically [[Nature|natural]], in contradistinction to being the result of [[Divinity|divine]] [[Positive law|positive]] [[legislation]], the Stoic natural law was indifferent to the divine or natural source of the law: the Stoics asserted the existence of a rational and purposeful order to the universe (a [[Divine law|divine]] or [[eternal law]]), and the means by which a rational being lived in accordance with this order was the natural law, which spelled out action that accorded with virtue.<ref>"Natural Law," ''International Encyclopedia of the Social Sciences''.</ref> These theories became highly influential among [[Ancient Rome|Roman]] jurists, and consequently played a great role in subsequent [[legal theory]].

===Christian natural law===
Despite [[paganism|pagan]] associations with natural law theory, a number (though not all) of the early [[Church Fathers]] sought to incorporate it into [[Christianity]] (the suspect devotion of the Stoics to pagan worship no doubt aided in this adoption). This was true in the West more so than in the East. The most notable among these was [[Augustine of Hippo]], who equated natural law with man's [[prelapsarian]] state; as such, a life according to nature was no longer possible and men needed instead to seek salvation through the [[divine law]] and grace. In the Twelfth Century, [[Gratian (jurist)|Gratian]] reversed this, equating the natural and divine laws. [[Thomas Aquinas]] restored Natural Law to its independent state, asserting that, as the perfection of human reason, it could approach but not fully comprehend the [[Eternal law]] and needed to be supplemented by [[Divine law]].

All human laws were to be judged by their conformity to the natural law. An unjust law was in a sense no law at all. At this point, the natural law was not only used to pass judgment on the moral worth of various laws, but also to determine what the law said in the first place. This could result in some tension.<ref>Burns, "Aquinas's Two Doctrines of Natural Law."</ref>

The natural law was inherently [[teleology|teleological]] in that it aimed at human happiness. Its content was therefore determined by a conception of what things constituted happiness, be they temporal satisfaction or salvation . The [[state]], in being bound by the natural law, was conceived as an institution directed at bringing its subjects to true happiness. In the [[16th century]], the [[School of Salamanca]] ([[Francisco Suárez]], [[Francisco de Vitoria]], etc.) further developed a philosophy of natural law. After the [[Church of England]] [[English Reformation|broke from Rome]], the [[England|English]] [[theology|theologian]] [[Richard Hooker]] adapted [[Thomism|Thomistic]] notions of natural law to [[Anglicanism]].

===Hobbes' natural law===
By the Seventeenth Century, the [[Medieval]] [[teleology|teleological]] view came under intense criticism from some quarters. [[Thomas Hobbes]] instead founded a [[social contract|contractualist theory]] of [[legal positivism]] on what all men could agree upon: what they sought (happiness) was subject to contention, but a broad consensus could form around what they feared (violent death at the hands of another). The natural law was how a rational human being, seeking to survive and prosper, would act. It was discovered by considering humankind's [[natural rights]], whereas previously it could be said that natural rights were discovered by considering the natural law. In Hobbes' opinion, the only way natural law could prevail was for men to submit to the commands of the sovereign. Because the ultimate source of law now comes from the sovereign, and the sovereign's decisions need not be grounded in morality, legal positivism is born. [[Jeremy Bentham]]'s modifications on [[legal positivism]] further developed the theory.

As used by [[Thomas Hobbes]] in his treatise ''[[Leviathan (book)|Leviathan]]'', natural law is a [[precept]], or general rule, found out by [[reason]], by which a man is forbidden to do that which is destructive of his life, or takes away the means of preserving the same; and to omit that by which he thinks it may best be preserved.

There are nine Laws. The first two are expounded in chapter XIV ("of the first and second natural laws; and of contracts"); the others in chapter XV ("of other laws of nature").

* His first Law of nature is ''that every man ought to endeavour peace, as far as he has hope of obtaining it; and when he cannot obtain it, that he may seek and use all helps and advantages of war''.
* The second Law of nature is ''that a man be willing, when others are so too, as far forth, as for peace, and defence of himself he shall think it necessary, to lay down this right to all things; and be contented with so much liberty against other men, as he would allow other men against himself.''
* The third Law is ''that men perform their covenants made.'' In this law of nature consisteth the fountain and original of justice... when a covenant is made, then to break it is unjust and the definition of injustice is no other than the not performance of covenant. And whatsoever is not unjust is just.
* The fourth Law is ''that a man which receiveth benefit from another of mere grace, endeavour that he which giveth it, have no reasonable cause to repent him of his good will.'' Breach of this law is called ingratitude.
* The fifth Law is complaisance: ''that every man strive to accommodate himself to the rest.'' The observers of this law may be called sociable; the contrary, stubborn, insociable, forward, intractable.
* The sixth Law is ''that upon caution of the future time, a man ought to pardon the offences past of them that repenting, desire it.''
* The seventh Law is ''that in revenges, men look not at the greatness of the evil past, but the greatness of the good to follow.''
* The eighth Law is ''that no man by deed, word, countenance, or gesture, declare hatred or contempt of another.'' The breach of which law is commonly called contumely.
* The ninth Law is ''that every man acknowledge another for his equal by nature.'' The breach of this precept is pride.

===Liberal natural law===
Liberal natural law grew out of the [[Middle Ages|medieval]] Christian natural law theories and out of [[Thomas Hobbes|Hobbes']] revision of natural law, sometimes in an uneasy balance of the two.

[[Hugo Grotius]] based his philosophy of international law on natural law. In particular, his writings on [[freedom of the seas]] and [[just war theory]] directly appealed to natural law. About natural law itself, he wrote that "even the will of an [[omnipotent]] being cannot change or abrogate" natural law, which "would maintain its objective validity even if we should assume the impossible, that there is no [[God]] or that he does not care for human affairs." (''De iure belli ac pacis'', Prolegomeni XI). This is the famous argument ''etiamsi daremus'' (''non esse Deum''), that made natural law no longer dependent on theology.

[[John Locke]] incorporated natural law into many of his theories and philosophy, especially in ''[[Two Treatises of Government]]''. There is considerable debate about whether his conception of natural law was more akin to that of [[Thomas Aquinas|Aquinas]] (filtered through [[Richard Hooker]]) or [[Thomas Hobbes|Hobbes']] radical reinterpretation, though the effect of Locke's understanding is usually phrased in terms of a revision of Hobbes upon Hobbesean [[social contract|constractualist]] grounds. Locke turned Hobbes' prescription around, saying that if the ruler went against natural law and failed to protect "life, liberty, and property," people could justifiably overthrow the existing state and create a new one.

While Locke spoke in the language of natural law, the content of this law was by and large protective of [[natural rights]], and it was this language that later liberal thinkers preferred. [[Thomas Jefferson]], echoing Locke, appealed to [[inalienable rights|unalienable rights]] in the ''[[United States Declaration of Independence|Declaration of Independence]]'', "We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness."

The Belgian philosopher of law Frank van Dun is one among those who are elaborating a secular conception[http://users.ugent.be/~frvandun/Texts/Logica/NaturalLaw.htm] of natural law in the liberal tradition.

==Contemporary Catholic Understanding==
The [[Roman Catholic Church]] continues to hold the view of natural law set forth by [[Thomas Aquinas]], particularly in his ''[[Summa Theologica]]'', and often as filtered through the [[School of Salamanca]]. This view is also shared by some [[Protestant]] churches.{{Fact|date=February 2007}}

They understand human beings to consist of body and mind, the physical and the non-physical (or [[soul]] perhaps), and that the two are inextricably linked. Humans are capable of discerning the difference between [[good]] and [[evil]] because they have a [[conscience]]. There are many manifestations of the good that we can pursue. Some, like [[procreation]], are common to other animals, while others, like the pursuit of truth, are inclinations peculiar to the capacities of human beings.

To know what is right, one must use one's reason and apply it to Aquinas' precepts. The most important is the primary precept, self preservation. There are also four subsidiary precepts: procreation, education of children, living in society, and worshipping God (veneration). In addition to these, there are secondary precepts, which Aquinas did not specify like the other five. Therefore, for a deontological ethical theory they are open to a surprisingly large amount of interpretation and flexibility. Any rule that helps man to live up to the primary or subsidiary precepts can be a secondary precept, for example:

*Drunkenness is wrong because it injures one's health, and worse, destroys one's ability to reason, which is fundamental to man as a rational animal (i.e. does not support self preservation).
*Theft is wrong because it destroys social relations, and man is by nature a social animal (i.e. does not support the subsidiary precept of living in society).

Natural moral law is concerned with both exterior and interior acts, also know as action and motive. Simply doing the right thing is not enough; to be truly moral one's motive must be right as well. For example, helping an old lady across the road (good exterior act) to impress someone (bad interior act) is wrong. However, good intentions don’t always lead to good actions. The motive must coincide with Aquinas's cardinal or theological virtues. Cardinal virtues are acquired through reason applied to nature; they are:

#[[Prudence]]
#[[Justice]]
#[[Fortitude]]
#[[Temperance]]

His theological virtues are:

#Hope
#Charity
#Faith

According to Aquinas, to lack any of these virtues is to lack the ability to make a moral choice. For example, consider a man who possesses the virtues of justice, prudence, and fortitude, yet lacks temperance. Due to his lack of self control and desire for pleasure, despite his good intentions, he will find himself swaying from the moral path.

==In contemporary jurisprudence==
In [[jurisprudence]], natural law has a number of different meanings. It can refer to the doctrine a) that [[justice|just law]]s are [[immanent]] in nature - that is, they can be "discovered" or "found" but not "created" by such things as a [[bill of rights]]; b) that they can emerge by the natural process of resolving conflicts, as embodied by the evolutionary process of the common law; or c) 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 law. 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 of the United Kingdom|Parliament]] and the [[British monarchy|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]]. All have tried to construct a new version of natural law. The 19th-century [[anarchism|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, which are "self-evidently" and intrinsically worthwhile, and states that these goods reveal themselves as being incommensurable with one another.

==See also==
*[[Aristotle]]
*[[John Locke]]
*[[Legal positivism]]
*[[Natural rights]]
*[[Natural justice]]
*[[Stoicism]]
*[[School of Salamanca]]
*[[Thomas Aquinas]]
*[[Thomas Hobbes]]

==References==
<div class="references-small"><references/>

* Aristotle. ''Nicomachean Ethics''. Translated by H. Rackham. Loeb Classical Library. Cambridge, MA: Harvard University Press.
* Aristotle. ''Nicomachean Ethics''. Translated by J. A. K. Thomson (revised by Hugh Trennedick). New York: Penguin.
* Aristotle. ''Nicomachean Ethics''. Translated by Joe Sachs. Newburyport, MA: Focus Publishing.
* Aristotle. ''Rhetoric''.
* Aristotle. ''Politics''.
* Blackstone, William. 1765–9. ''Commentaries on the Laws of England''.
* Burns, Tony. 2000. "Aquinas's Two Doctrines of Natural Law." ''Political Studies'' 48. Pp. 929–946.
* Jaffa, Harry V. 1952. ''Thomism and Aristotelianism''. Chicago: University of Chicago Press.
* Kainz, Howard P. 2004. ''Natural Law: an Introduction and Re-examination''. Open Court. ISBN 0-8126-9454-6.
* "Natural Law." ''International Encyclopedia of the Social Sciences''. New York, 1968.
* Robinson, Dave & Groves, Judy. 2003. ''Introducing Political Philosophy''. Icon Books. ISBN 1-84046-450-X.
* Raoul Muhm: Germania: La rinascita del diritto naturale e i crimini contro l´umanità. Deutschland: Die Renaissance des Naturrechts und die Verbrechen gegen die Menschlichkeit. Germany: The renaissance of natural law and crimes against humanity. Vecchiarelli Editore Manziana (Roma) 2004 ISBN 88-8247-153-5
* Shellens, Max Salomon. 1959. "Aristotle on Natural Law." ''Natural Law Forum'' 4, no. 1. Pp. 72–100.
</div>

==External links==
*[[Stanford Encyclopedia of Philosophy]]:
**[http://plato.stanford.edu/entries/natural-law-ethics/ The Natural Law Tradition in Ethics], by Mark Murphy, 2002.
**[http://plato.stanford.edu/entries/aquinas-moral-political/ Aquinas' Moral, Political, and Legal Philosophy], by [[John Finnis]], 2005.
**[http://plato.stanford.edu/entries/natural-law-theories/ Natural Law Theories], by John Finnis, 2007.
*[http://www.rsrevision.com/Alevel/ethics/natural_law/index.htm Natural Law explained, evaluated and applied] A clear introduction to Natural Law
*[http://www.newadvent.org/cathen/09076a.htm ''Catholic Encyclopedia'' "Natural Law"]
*[http://www.iep.utm.edu/n/natlaw.htm Internet Encyclopedia of Philosophy Entry 'Natural Law' by Kenneth Einar Himma]
*[[Daniel Z. Epstein]] [http://ssrn.com/abstract=959530 "Law's 'I'"] 2007.
*[[Wendy McElroy|McElroy, Wendy]] [http://www.wendymcelroy.com/natlaw.htm ''The Non-Absurdity of Natural Law''], [[The Freeman]], February 1998, Vol. 48, No. 2, pp.108-111
*[http://www.acton.org/programs/students/essay/2002/third.html ''Building the Foundations for the Free Society''] Finding Common Ground in the Political Theory of Saint [[Robert Bellarmine]] and [[John Locke]]

Natural law - Revision history

WikSysop at 07:51, 5 April 2007