And, being furnished with like faculties, sharing all in one community of Nature, there cannot be supposed any such subordination among us that may authorise us to destroy one another, as if we were made for one another's uses, as the inferior ranks of creatures are for ours. Every one as he is bound to preserve himself, and not to quit his station wilfully, so by the like reason, when his own preservation comes not in competition, ought he as much as he can to preserve the rest of mankind, and not unless it be to do justice on an offender, take away or impair the life, or what tends to the preservation of the life, the liberty, health, limb, or goods of another.
The Right to Punish: [II. 7-13].
7. And that all men may be restrained from invading others' rights, and from doing hurt to one another, and the law of Nature be observed, which willeth the peace and preservation of all mankind, the execution of the law of Nature is in that state put into every man's hands, whereby every one has a right to punish the transgressors of that law to such a degree as may hinder its violation. For the law of Nature would, as all other laws that concern men in this world, be in vain if there were nobody that in the state of Nature had a power to execute that law, and thereby preserve the innocent and restrain offenders; and if any one in the state of Nature may punish another for any evil he has done, every one may do so. For in that state of perfect equality, where naturally there is no superiority or jurisdiction of one over another, what any may do in prosecution of that law, every one must needs have a right to do. .
8. And thus, in the state of Nature, one man comes by a power over another, but yet no absolute or arbitrary power to use a criminal, when he has got him in his hands, according to the passionate heats or boundless extravagancy of his own will, but only to retribute to him so far as calm reason and conscience dictate, what is proportionate to his transgression, which is so much as may serve for reparation and restraint.