These properties of just and rationall Judicature considered, I cannot forbeare to observe the excellent constitution of the Courts of Justice, established both for Common, and also for Publique Pleas in England. By Common Pleas, I meane those, where both the Complaynant and Defendant are Subjects: and by Publique, (which are also called Pleas of the Crown) those, where the Complaynant is the Soveraign. For whereas there were two orders of men, whereof one was Lords, the other Commons; The Lords had this Priviledge, to have for Judges in all Capitall crimes, none but Lords; and of them, as many as would be present; which being ever acknowledged as a Priviledge of favour, their Judges were none but such as they had themselves desired. And in all controversies, every Subject (as also in civill controversies the Lords) had for Judges, men of the Country where the matter in controversie lay; against which he might make his exceptions, till at last Twelve men without exception being agreed on, they were Judged by those twelve. So that having his own Judges, there could be nothing alledged by the party, why the sentence should not be finall, These publique persons, with Authority from the Soveraign Power, either to Instruct, or Judge the people, are such members of the Common-wealth, as may fitly be compared to the organs of Voice in a Body naturall.
For Execution Publique Ministers are also all those, that have Authority from the Soveraign, to procure the Execution of Judgements given; to publish the Soveraigns Commands; to suppresse Tumults; to apprehend, and imprison Malefactors; and other acts tending to the conservation of the Peace. For every act they doe by such Authority, is the act of the Common-wealth; and their service, answerable to that of the Hands, in a Bodie naturall.
Publique Ministers abroad, are those that represent the Person of their own Soveraign, to forraign States. Such are Ambassadors, Messengers, Agents, and Heralds, sent by publique Authoritie, and on publique Businesse.
But such as are sent by Authoritie only of some private partie of a troubled State, though they be received, are neither Publique, nor Private Ministers of the Common-wealth; because none of their actions have the Common-wealth for Author. Likewise, an Ambassador sent from a Prince, to congratulate, condole, or to assist at a solemnity, though Authority be Publique; yet because the businesse is Private, and belonging to him in his naturall capacity; is a Private person. Also if a man be sent into another Country, secretly to explore their counsels, and strength; though both the Authority, and the Businesse be Publique; yet because there is none to take notice of any Person in him, but his own; he is but a Private Minister; but yet a Minister of the Common-wealth; and may be compared to an Eye in the Body naturall. And those that are appointed to receive the Petitions or other informations of the People, and are as it were the publique Eare, are Publique Ministers, and represent their Soveraign in that office.