Article 3, Section 1
William Blackstone, Commentaries 1:259--60; 3:23--241765 1768
In this distinct and separate existence of the judicial power, in a peculiar body of men, nominated indeed, but not removeable at pleasure, by the crown, consists one main preservative of the public liberty; which cannot subsist long in any state, unless the administration of common justice be in some degree separated both from the legislative and also from the executive power. Were it joined with the legislative, the life, liberty, and property, of the subject would be in the hands of arbitrary judges, whose decisions would be then regulated only by their own opinions, and not by any fundamental principles of law; which, though legislators may depart from, yet judges are bound to observe. Were it joined with the executive, this union might soon be an overballance for the legislative. For which reason, by the statute of 16 Car. I. c. 10. which abolished the court of star chamber, effectual care is taken to remove all judicial power out of the hands of the king's privy council; who, as then was evident from recent instances, might soon be inclined to pronounce that for law, which was most agreeable to the prince or his officers. Nothing therefore is more to be avoided, in a free constitution, than uniting the provinces of a judge and a minister of state. And indeed, that the absolute power, claimed and exercised in a neighbouring nation, is more tolerable than that of the eastern empires, is in great measure owing to their having vested the judicial power in their parliaments, a body separate and distinct from both the legislative and executive: and, if ever that nation recovers it's former liberty, it will owe it to the efforts of those assemblies. In Turkey, where every thing is centered in the sultan or his ministers, despotic power is in it's meridian, and wears a more dreadful aspect.
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A court is defined to be a place wherein justice is judicially administred. And, as by our excellent constitution the sole executive power of the laws is vested in the person of the king, it will follow that all courts of justice, which are the medium by which he administers the laws, are derived from the power of the crown. For whether created by act of parliament, letters patent, or prescription, (the only methods of erecting a new court of judicature) the kings consent in the two former is expressly, and in the latter impliedly, given. In all these courts the king is supposed in contemplation of law to be always present; but as that is in fact impossible, he is there represented by his judges, whose power is only an emanation of the royal prerogative.
For the more speedy, universal, and impartial administration of justice between subject and subject, the law hath appointed a prodigious variety of courts, some with a more limited, others with a more extensive jurisdiction; some constituted to enquire only, others to hear and determine; some to determine in the first instance, others upon appeal and by way of review. All these in their turns will be taken notice of in their respective places: and I shall therefore here only mention one distinction, that runs throughout them all; viz. that some of them are courts of record, others not of record. A court of record is that where the acts and judicial proceedings are enrolled in parchment for a perpetual memorial and testimony: which rolls are called the records of the court, and are of such high and supereminent authority, that their truth is not to be called in question. For it is a settled rule and maxim that nothing shall be averred against a record, nor shall any plea, or even proof, be admitted to the contrary. And if the existence of a record be denied, it shall be tried by nothing but itself; that is, upon bare inspection whether there be any any such record or no; else there would be no end of disputes. But if there appear any mistake of the clerk in making up such record, the court will direct him to amend it. All courts of record are the king's courts, in right of his crown and royal dignity, and therefore no other court hath authority to fine or imprison. . . .
The Founders' Constitution
Volume 4, Article 3, Section 1, Document 1
The University of Chicago Press
Blackstone, William. Commentaries on the Laws of England: A Facsimile of the First Edition of 1765--1769. Chicago: University of Chicago Press, 1979.