great end of men's entering into society, being the enjoyment of their properties in peace and safety, and the great instrument and means of that being the laws established in that society; the first and fundamental positive law of all commonwealths is the establishing of the legislative power; as the first and fundamental natural law, which is to govern even the legislative itself, is the preservation of the society, and (as far as will consist with the public good) of every person in it.