Sometimes also in the meerly Civill government, there be more than one Soule: As when the Power of levying mony, (which is the Nutritive faculty,) has depended on a generall Assembly; the Power of conduct and command, (which is the Motive Faculty,) on one man; and the Power of making Lawes, (which is the Rationall faculty,) on the accidentall consent, not onely of those two, but also of a third; This endangereth the Common-wealth, somtimes for want of consent to good Lawes; but most often for want of such Nourishment, as is necessary to Life, and Motion. For although few perceive, that such government, is not government, but division of the Common-wealth into three Factions, and call it mixt Monarchy; yet the truth is, that it is not one independent Common-wealth, but three independent Factions; nor one Representative Person, but three. In the Kingdome of God, there may be three Persons independent, without breach of unity in God that Reigneth; but where men Reigne, that be subject to diversity of opinions, it cannot be so. And therefore if the King bear the person of the People, and the generall Assembly bear also the person of the People, and another assembly bear the person of a Part of the people, they are not one Person, nor one Soveraign, but three Persons, and three Soveraigns.
To what Disease in the Naturall Body of man, I may exactly compare this irregularity of a Common-wealth, I know not. But I have seen a man, that had another man growing out of his side, with an head, armes, breast, and stomach, of his own: If he had had another man growing out of his other side, the comparison might then have been exact.