"To this purpose, I think it may not be amiss, to set down what I take to be political power; the power of a magistrate, over a subject may be distinguished from that of a father over his children, a master over his servant, a husband over his wife, and a lord over his slave. All which distinct powers happening sometimes together in the same man [sic], if he be considered under these different relations, it may help us to distinguish these powers from one another, and shew the difference betwixt a ruler of a commonwealth, a father of a family, and a captain of a galley."

John Locke: Second Treatise on Government