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Home > Summa Theologica > First Part of the Second Part > Question 95

Question 95. Human law

  1. Its utility
  2. Its origin
  3. Its quality
  4. Its division

Article 1. Whether it was useful for laws to be framed by men?

Objection 1. It would seem that it was not useful for laws to be framed by men. Because the purpose of every law is that man be made good thereby, as stated above (Question 92, Article 1). But men are more to be induced to be good willingly by means of admonitions, than against their will, by means of laws. Therefore there was no need to frame laws.

Objection 2. Further, As the Philosopher says (Ethic. v, 4), "men have recourse to a judge as to animate justice." But animate justice is better than inanimate justice, which contained in laws. Therefore it would have been better for the execution of justice to be entrusted to the decision of judges, than to frame laws in addition.

Objection 3. Further, every law is framed for the direction of human actions, as is evident from what has been stated above (90, A1,2). But since human actions are about singulars, which are infinite in number, matter pertaining to the direction of human actions cannot be taken into sufficient consideration except by a wise man, who looks into each one of them. Therefore it would have been better for human acts to be directed by the judgment of wise men, than by the framing of laws. Therefore there was no need of human laws.

On the contrary, Isidore says (Etym. v, 20): "Laws were made that in fear thereof human audacity might be held in check, that innocence might be safeguarded in the midst of wickedness, and that the dread of punishment might prevent the wicked from doing harm." But these things are most necessary to mankind. Therefore it was necessary that human laws should be made.

I answer that, As stated above (63, 1; 94, 3), man has a natural aptitude for virtue; but the perfection of virtue must be acquired by man by means of some kind of training. Thus we observe that man is helped by industry in his necessities, for instance, in food and clothing. Certain beginnings of these he has from nature, viz. his reason and his hands; but he has not the full complement, as other animals have, to whom nature has given sufficiency of clothing and food. Now it is difficult to see how man could suffice for himself in the matter of this training: since the perfection of virtue consists chiefly in withdrawing man from undue pleasures, to which above all man is inclined, and especially the young, who are more capable of being trained. Consequently a man needs to receive this training from another, whereby to arrive at the perfection of virtue. And as to those young people who are inclined to acts of virtue, by their good natural disposition, or by custom, or rather by the gift of God, paternal training suffices, which is by admonitions. But since some are found to be depraved, and prone to vice, and not easily amenable to words, it was necessary for such to be restrained from evil by force and fear, in order that, at least, they might desist from evil-doing, and leave others in peace, and that they themselves, by being habituated in this way, might be brought to do willingly what hitherto they did from fear, and thus become virtuous. Now this kind of training, which compels through fear of punishment, is the discipline of laws. Therefore in order that man might have peace and virtue, it was necessary for laws to be framed: for, as the Philosopher says (Polit. i, 2), "as man is the most noble of animals if he be perfect in virtue, so is he the lowest of all, if he be severed from law and righteousness"; because man can use his reason to devise means of satisfying his lusts and evil passions, which other animals are unable to do.

Reply to Objection 1. Men who are well disposed are led willingly to virtue by being admonished better than by coercion: but men who are evilly disposed are not led to virtue unless they are compelled.

Reply to Objection 2. As the Philosopher says (Rhet. i, 1), "it is better that all things be regulated by law, than left to be decided by judges": and this for three reasons. First, because it is easier to find a few wise men competent to frame right laws, than to find the many who would be necessary to judge aright of each single case. Secondly, because those who make laws consider long beforehand what laws to make; whereas judgment on each single case has to be pronounced as soon as it arises: and it is easier for man to see what is right, by taking many instances into consideration, than by considering one solitary fact. Thirdly, because lawgivers judge in the abstract and of future events; whereas those who sit in judgment of things present, towards which they are affected by love, hatred, or some kind of cupidity; wherefore their judgment is perverted.

Since then the animated justice of the judge is not found in every man, and since it can be deflected, therefore it was necessary, whenever possible, for the law to determine how to judge, and for very few matters to be left to the decision of men.

Reply to Objection 3. Certain individual facts which cannot be covered by the law "have necessarily to be committed to judges," as the Philosopher says in the same passage: for instance, "concerning something that has happened or not happened," and the like.

Article 2. Whether every human law is derived from the natural law?

Objection 1. It would seem that not every human law is derived from the natural law. For the Philosopher says (Ethic. v, 7) that "the legal just is that which originally was a matter of indifference." But those things which arise from the natural law are not matters of indifference. Therefore the enactments of human laws are not derived from the natural law.

Objection 2. Further, positive law is contrasted with natural law, as stated by Isidore (Etym. v, 4) and the Philosopher (Ethic. v, 7). But those things which flow as conclusions from the general principles of the natural law belong to the natural law, as stated above (Question 94, Article 4). Therefore that which is established by human law does not belong to the natural law.

Objection 3. Further, the law of nature is the same for all; since the Philosopher says (Ethic. v, 7) that "the natural just is that which is equally valid everywhere." If therefore human laws were derived from the natural law, it would follow that they too are the same for all: which is clearly false.

Objection 4. Further, it is possible to give a reason for things which are derived from the natural law. But "it is not possible to give the reason for all the legal enactments of the lawgivers," as the jurist says [Pandect. Justin. lib. i, ff, tit. iii, v; De Leg. et Senat.]. Therefore not all human laws are derived from the natural law.

On the contrary, Tully says (Rhet. ii): "Things which emanated from nature and were approved by custom, were sanctioned by fear and reverence for the laws."

I answer that, As Augustine says (De Lib. Arb. i, 5) "that which is not just seems to be no law at all": wherefore the force of a law depends on the extent of its justice. Now in human affairs a thing is said to be just, from being right, according to the rule of reason. But the first rule of reason is the law of nature, as is clear from what has been stated above (91, 2, ad 2). Consequently every human law has just so much of the nature of law, as it is derived from the law of nature. But if in any point it deflects from the law of nature, it is no longer a law but a perversion of law.

But it must be noted that something may be derived from the natural law in two ways: first, as a conclusion from premises, secondly, by way of determination of certain generalities. The first way is like to that by which, in sciences, demonstrated conclusions are drawn from the principles: while the second mode is likened to that whereby, in the arts, general forms are particularized as to details: thus the craftsman needs to determine the general form of a house to some particular shape. Some things are therefore derived from the general principles of the natural law, by way of conclusions; e.g. that "one must not kill" may be derived as a conclusion from the principle that "one should do harm to no man": while some are derived therefrom by way of determination; e.g. the law of nature has it that the evil-doer should be punished; but that he be punished in this or that way, is a determination of the law of nature.

Accordingly both modes of derivation are found in the human law. But those things which are derived in the first way, are contained in human law not as emanating therefrom exclusively, but have some force from the natural law also. But those things which are derived in the second way, have no other force than that of human law.

Reply to Objection 1. The Philosopher is speaking of those enactments which are by way of determination or specification of the precepts of the natural law.

Reply to Objection 2. This argument avails for those things that are derived from the natural law, by way of conclusions.

Reply to Objection 3. The general principles of the natural law cannot be applied to all men in the same way on account of the great variety of human affairs: and hence arises the diversity of positive laws among various people.

Reply to Objection 4. These words of the Jurist are to be understood as referring to decisions of rulers in determining particular points of the natural law: on which determinations the judgment of expert and prudent men is based as on its principles; in so far, to wit, as they see at once what is the best thing to decide.

Hence the Philosopher says (Ethic. vi, 11) that in such matters, "we ought to pay as much attention to the undemonstrated sayings and opinions of persons who surpass us in experience, age and prudence, as to their demonstrations."

Article 3. Whether Isidore's description of the quality of positive law is appropriate?

Objection 1. It would seem that Isidore's description of the quality of positive law is not appropriate, when he says (Etym. v, 21): "Law shall be virtuous, just, possible to nature, according to the custom of the country, suitable to place and time, necessary, useful; clearly expressed, lest by its obscurity it lead to misunderstanding; framed for no private benefit, but for the common good." Because he had previously expressed the quality of law in three conditions, saying that "law is anything founded on reason, provided that it foster religion, be helpful to discipline, and further the common weal." Therefore it was needless to add any further conditions to these.

Objection 2. Further, Justice is included in honesty, as Tully says (De Offic. vii). Therefore after saying "honest" it was superfluous to add "just."

Objection 3. Further, written law is condivided with custom, according to Isidore (Etym. ii, 10). Therefore it should not be stated in the definition of law that it is "according to the custom of the country."

Objection 4. Further, a thing may be necessary in two ways. It may be necessary simply, because it cannot be otherwise: and that which is necessary in this way, is not subject to human judgment, wherefore human law is not concerned with necessity of this kind. Again a thing may be necessary for an end: and this necessity is the same as usefulness. Therefore it is superfluous to say both "necessary" and "useful."

On the contrary, stands the authority of Isidore.

I answer that, Whenever a thing is for an end, its form must be determined proportionately to that end; as the form of a saw is such as to be suitable for cutting (Phys. ii, text. 88). Again, everything that is ruled and measured must have a form proportionate to its rule and measure. Now both these conditions are verified of human law: since it is both something ordained to an end; and is a rule or measure ruled or measured by a higher measure. And this higher measure is twofold, viz. the Divine law and the natural law, as explained above (2; 93, 3). Now the end of human law is to be useful to man, as the jurist states [Pandect. Justin. lib. xxv, ff., tit. iii; De Leg. et Senat.]. Wherefore Isidore in determining the nature of law, lays down, at first, three conditions; viz. that it "foster religion," inasmuch as it is proportionate to the Divine law; that it be "helpful to discipline," inasmuch as it is proportionate to the nature law; and that it "further the common weal," inasmuch as it is proportionate to the utility of mankind.

All the other conditions mentioned by him are reduced to these three. For it is called virtuous because it fosters religion. And when he goes on to say that it should be "just, possible to nature, according to the customs of the country, adapted to place and time," he implies that it should be helpful to discipline. For human discipline depends on first on the order of reason, to which he refers by saying "just": secondly, it depends on the ability of the agent; because discipline should be adapted to each one according to his ability, taking also into account the ability of nature (for the same burdens should be not laid on children as adults); and should be according to human customs; since man cannot live alone in society, paying no heed to others: thirdly, it depends on certain circumstances, in respect of which he says, "adapted to place and time." The remaining words, "necessary, useful," etc. mean that law should further the common weal: so that "necessity" refers to the removal of evils; "usefulness" to the attainment of good; "clearness of expression," to the need of preventing any harm ensuing from the law itself. And since, as stated above (Question 90, Article 2), law is ordained to the common good, this is expressed in the last part of the description.

This suffices for the Replies to the Objections.

Article 4. Whether Isidore's division of human laws is appropriate?

Objection 1. It would seem that Isidore wrongly divided human statutes or human law (Etym. v, 4, seqq.). For under this law he includes the "law of nations," so called, because, as he says, "nearly all nations use it." But as he says, "natural law is that which is common to all nations." Therefore the law of nations is not contained under positive human law, but rather under natural law.

Objection 2. Further, those laws which have the same force, seem to differ not formally but only materially. But "statutes, decrees of the commonalty, senatorial decrees," and the like which he mentions (Etym. v, 9), all have the same force. Therefore they do not differ, except materially. But art takes no notice of such a distinction: since it may go on to infinity. Therefore this division of human laws is not appropriate.

Objection 3. Further, just as, in the state, there are princes, priests and soldiers, so are there other human offices. Therefore it seems that, as this division includes "military law," and "public law," referring to priests and magistrates; so also it should include other laws pertaining to other offices of the state.

Objection 4. Further, those things that are accidental should be passed over. But it is accidental to law that it be framed by this or that man. Therefore it is unreasonable to divide laws according to the names of lawgivers, so that one be called the "Cornelian" law, another the "Falcidian" law, etc.

On the contrary, The authority of Isidore (Objection 1) suffices.

I answer that, A thing can of itself be divided in respect of something contained in the notion of that thing. Thus a soul either rational or irrational is contained in the notion of animal: and therefore animal is divided properly and of itself in respect of its being rational or irrational; but not in the point of its being white or black, which are entirely beside the notion of animal. Now, in the notion of human law, many things are contained, in respect of any of which human law can be divided properly and of itself. For in the first place it belongs to the notion of human law, to be derived from the law of nature, as explained above (Article 2). In this respect positive law is divided into the "law of nations" and "civil law", according to the two ways in which something may be derived from the law of nature, as stated above (Article 2). Because, to the law of nations belong those things which are derived from the law of nature, as conclusions from premises, e.g. just buyings and sellings, and the like, without which men cannot live together, which is a point of the law of nature, since man is by nature a social animal, as is proved in Polit. i, 2. But those things which are derived from the law of nature by way of particular determination, belong to the civil law, according as each state decides on what is best for itself.

Secondly, it belongs to the notion of human law, to be ordained to the common good of the state. In this respect human law may be divided according to the different kinds of men who work in a special way for the common good: e.g. priests, by praying to God for the people; princes, by governing the people; soldiers, by fighting for the safety of the people. Wherefore certain special kinds of law are adapted to these men.

Thirdly, it belongs to the notion of human law, to be framed by that one who governs the community of the state, as shown above (Question 90, Article 3). In this respect, there are various human laws according to the various forms of government. Of these, according to the Philosopher (Polit. iii, 10) one is "monarchy," i.e. when the state is governed by one; and then we have "Royal Ordinances." Another form is "aristocracy," i.e. government by the best men or men of highest rank; and then we have the "Authoritative legal opinions" [Responsa Prudentum] and "Decrees of the Senate" [Senatus consulta]. Another form is "oligarchy," i.e. government by a few rich and powerful men; and then we have "Praetorian," also called "Honorary," law. Another form of government is that of the people, which is called "democracy," and there we have "Decrees of the commonalty" [Plebiscita]. There is also tyrannical government, which is altogether corrupt, which, therefore, has no corresponding law. Finally, there is a form of government made up of all these, and which is the best: and in this respect we have law sanctioned by the "Lords and Commons," as stated by Isidore (Etym. v, 4, seqq.).

Fourthly, it belongs to the notion of human law to direct human actions. In this respect, according to the various matters of which the law treats, there are various kinds of laws, which are sometimes named after their authors: thus we have the "Lex Julia" about adultery, the "Lex Cornelia" concerning assassins, and so on, differentiated in this way, not on account of the authors, but on account of the matters to which they refer.

Reply to Objection 1. The law of nations is indeed, in some way, natural to man, in so far as he is a reasonable being, because it is derived from the natural law by way of a conclusion that is not very remote from its premises. Wherefore men easily agreed thereto. Nevertheless it is distinct from the natural law, especially it is distinct from the natural law which is common to all animals.

The Replies to the other Objections are evident from what has been said.

The Summa Theologica of St. Thomas Aquinas
Second and Revised Edition, 1920
Literally translated by Fathers of the English Dominican Province
Online Edition Copyright © 2008 by Kevin Knight
Nihil Obstat. F. Innocentius Apap, O.P., S.T.M., Censor. Theol.
Imprimatur. Edus. Canonicus Surmont, Vicarius Generalis. Westmonasterii.
APPROBATIO ORDINIS
Nihil Obstat. F. Raphael Moss, O.P., S.T.L. and F. Leo Moore, O.P., S.T.L.
Imprimatur. F. Beda Jarrett, O.P., S.T.L., A.M., Prior Provincialis Angliæ

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