The attaining to this sovereign power is by two ways. One, by natural force; as when a man maketh his children to submit themselves, and their children, to his government, as being able to destroy them if they refuse; or by war subdueth his enemies to his will, giving them their lives on that condition. The other is, when men agree amongst themselves to submit to some man, or assembly of men, voluntarily, on confidence to be protected by him against all others. This latter may be called a political commonwealth, or commonwealth by “institution”; and the former, a commonwealth by “acquisition.” And first, I shall speak of a commonwealth by institution.