7. It is an old saying, volenti non fit injuria, the willing man receives no injury; yet the truth of it may be derived from our principles. For grant that a man be willing that that should be done which he conceives to be an injury to him; why then, that is done by his will, which by contract was not lawful to be done. But he being willing that should be done which was not lawful by contract, the contract itself (by the fifteenth article of the foregoing chapter) becomes void. The right therefore of doing it returns; therefore it is done by right; wherefore it is no injury.
The third law of nature, of ingratitude.
8. The third precept of the natural law is, that you suffer not him to be the worse for you, who, out of the confidence he had in you, first did you a good turn; or that you accept not a gift, but with a mind to endeavour that the giver shall have no just occasion to repent him of his gift. For without this, he should act without reason, that would confer a benefit where he sees it would be lost; and by this means all beneficence and trust, together with all kind of benevolence, would be taken from among men, neither would there be aught of mutual assistance among them, nor any commencement of gaining grace and favour; by reason whereof the state of war would necessarily remain, contrary to the fundamental law of nature. But because the breach of this law is not a breach of trust or contract, (for we suppose no contracts to have passed among them), therefore is it not usually termed an injury; but because good turns and thanks have a mutual eye to each other, it is called ingratitude.
The fourth law of nature, that every man render himself useful.
9. The fourth precept of nature is, that every man render himself useful unto others: which that we may rightly understand, we must remember that there is in men a diversity of dispositions to enter into society, arising from the diversity of their affections, not unlike that which is found in stones, brought together in the building, by reason of the diversity of their matter and figure. For as a stone, which in regard of its sharp and angular form takes up more room from other stones than it fills up itself, neither because of the hardness of its matter can it well be pressed together, or easily cut, and would hinder the building from being fitly compacted, is cast away, as not fit for use: so a man, for the harshness of his disposition in retaining superfluities for himself, and detaining of necessaries from others, and being incorrigible by reason of the stubbornness of his affections, is commonly said to be useless and troublesome unto others. Now, because each one not by right only, but even by natural necessity, is supposed with all his main might to intend the procurement of those things which are necessary to his own preservation; if any man will contend on the other side for superfluities, by his default there will arise a war; because that on him alone there lay no necessity of contending; he therefore acts against the fundamental law of nature. Whence it follows, (which we were to show), that it is a precept of nature, that every man accommodate himself to others. But he who breaks this law may be called useless and troublesome. Yet Cicero opposeth inhumanity to this usefulness, as having regard to this very law.
The fifth law of nature, of mercifulness.
10. The fifth precept of the law of nature is, that we must forgive him who repents and asks pardon for what is past, having first taken caution for the time to come. The pardon of what is past, or the remission of an offence, is nothing else but the granting of peace to him that asketh it, after he hath warred against us, and now is become penitent. But peace granted to him that repents not, that is, to him that retains a hostile mind, or that gives not caution for the future, that is, seeks not peace, but opportunity; is not properly peace, but fear, and therefore is not commanded by nature. Now to him that will not pardon the penitent and that gives future caution, peace itself it seems is not pleasing: which is contrary to the natural law.
The sixth law, that punishments only regard the future.
11. The sixth precept of the natural law is, that in revenge and punishments we must have our eye not at the evil past, but the future good: that is, it is not lawful to inflict punishment for any other end, but that the offender may be corrected, or that others warned by his punishment may become better. But this is confirmed chiefly from hence, that each man is bound by the law of nature to forgive one another, provided he give caution for the future, as hath been showed in the foregoing article. Furthermore, because revenge, if the time past be only considered, is nothing else but a certain triumph and glory of mind, which points at no end; for it contemplates only what is past, but the end is a thing to come; but that which is directed to no end, is vain: that revenge therefore which regards not the future, proceeds from vain glory, and is therefore without reason. But to hurt another without reason, introduces a war, and is contrary to the fundamental law of nature. It is therefore a precept of the law of nature, that in revenge we look not backwards, but forward. Now the breach of this law is commonly called cruelty.
The seventh law of nature, against slander.