And therefore no wonder, if such irrational creatures as govern themselves in multitude, do it much more firmly than mankind, that do it by arbitrary institution. [Sidenote: That union is necessary for the maintaining of concord.] 6. It remaineth therefore still, that consent, by which I understand the concurrence of many men’s wills to one action, is not sufficient security for their common peace, without the erection of some common power, by the fear whereof they may be compelled both to keep the peace amongst themselves, and to join their strengths together, against a common enemy. And that this may be done, there is no way imaginable, but only union, which is defined, chapter XII. section 8, to be the involving, or including the wills of many in the will of one man, or in the will of the greatest part of any one number of men, that is to say, in the will of one man, or of one _council_. For a council is nothing else but an _assembly_ of men deliberating concerning something common to them all. [Sidenote: How union is made.] 7. The making of union consisteth in this, that every man by covenant oblige himself to some one and the same man, or to some one and the same council, by them all named and determined, to do those actions, which the said man or council shall command them to do, and to do no action, which he or they shall forbid, or command them not to do. And further, in case it be a council, whose commands they covenant to obey, that then also they covenant, that every man shall hold that for the command of the whole council, which is the command of the greater part of those men, whereof such council consisteth. And though the will of man being not voluntary, but the beginning of voluntary actions, is not subject to deliberation and covenant; yet when a man covenanteth to subject his will to the command of another, he obligeth himself to this, that he resign his strength and means to him, whom he covenanteth to obey. And hereby he that is to command, may by the use of all their means and strength, be able by the terror thereof, to frame the will of them all to unity and concord, amongst themselves. [Sidenote: Body politic defined.] 8. This union so made, is that which men call now a-days, a _body politic_, or civil society; and the Greeks call it πόλις, that is to say, a city, which may be defined to be a multitude of men, united as one person, by a common power, for their common peace, defence, and benefit. [Sidenote: Corporation defined.]