The obligation of subjects to the sovereign, is understood to last as long, and no longer, than the power lasteth, by which he is able to protect them. For the right men have by nature to protect themselves, when none else can protect them, can by no covenant be relinquished. The sovereignty is the soul of the commonwealth; which once departed from the body, the members do no more receive their motion from it. The end of obedience is protection; which, wheresoever a man seeth it, either in his own, or in another’s sword, nature applieth his obedience to it, and his endeavour to maintain it. And though sovereignty, in the intention of them that make it, be immortal; yet is it in its own nature, not only subject to violent death, by foreign war; but also through the ignorance, and passions of men, it hath in it, from the very institution, many seeds of a natural mortality, by intestine discord. [Sidenote: In case of captivity.] If a subject be taken prisoner in war; or his person, or his means of life be within the guards of the enemy, and hath his life and corporal liberty given him, on condition to be subject to the victor, he hath liberty to accept the condition; and having accepted it, is the subject of him that took him; because he had no other way to preserve himself. The case is the same, if he be detained on the same terms, in a foreign country. But if a man be held in prison, or bonds, or is not trusted with the liberty of his body; he cannot be understood to be bound by covenant to subjection; and therefore may, if he can, make his escape by any means whatsoever. [Sidenote: In case the sovereign cast off the government from himself and his heirs.] If a monarch shall relinquish the sovereignty, both for himself, and his heirs; his subjects return to the absolute liberty of nature; because, though nature may declare who are his sons, and who are the nearest of his kin; yet it dependeth on his own will, as hath been said in the precedent chapter, who shall be his heir. If therefore he will have no heir, there is no sovereignty, nor subjection. The case is the same, if he die without known kindred, and without declaration of his heir. For then there can no heir be known, and consequently no subjection be due. [Sidenote: In case of banishment.] If the sovereign banish his subject; during the banishment, he is not subject. But he that is sent on a message, or hath leave to travel, is still subject; but it is, by contract between sovereigns, not by virtue of the covenant of subjection. For whosoever entereth into another’s dominion, is subject to all the laws thereof; unless he have a privilege by the amity of the sovereigns, or by special licence. [Sidenote: In case the sovereign render himself subject to another.]