So that the end and measure of this power, when in every man's hands in the state of nature, being the preservation of all of his society, that is, all mankind in general, it can have no other end or measure, when in the hands of the magistrate, but to preserve the members of that society in their lives, liberties, and possessions; and so cannot be an absolute, arbitrary power over their lives and fortunes, which are as much as possible to be preserved; but a power to make laws, and annex such penalties to them, as may tend to the preservation of the whole, by cutting off those parts, and those only, which are so corrupt, that they threaten the sound and healthy, without which no severity is lawful.