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William Blackstone, Commentaries on the Laws of England Vol 1, (Oxford: Clarendon Press, 1765, facsimile version Legal Classics Library, 1983)
The Common Law
pp. 63, 67-73
Section The Third
Of the LAWS of ENGLAND.
The municipal law of England, or the rule of civil conduct prescribed to the inhabitants of this kingdom, may with sufficient propriety be divided into two kinds; the lex non scripta, the written, or common law; and the lex scripta the written, or statute law.
The lex non scripta, or unwritten law, includes not only general customs, or the common law properly so called; but also the particular customs of certain parts of the kingdom; and likewise those particular laws, that are by custom observed only in certain courts and jurisdictions.
. . . . .
This unwritten, or common, law is properly distinguishable into three kinds: 1. General customs; which are the universal rule of the whole kingdom, and form the common law, in its stricter and more usual signification. 2. Particular customs; which for the most part affect only the inhabitants of particular districts. 3. Certain particular laws; which by custom are adopted and used by some particular courts, of pretty general and extensive jurisdiction.
I. As to general customs, or the common law, properly so-called; this is that law, by which proceedings and determinations in the king’s ordinary courts of justice are guided and directed. This, for the most part, settles the course in which lands descend by inheritance; the manner and form of acquiring and transferring property; the solemnities and obligation of contracts; the rules of expounding wills, deeds, and acts of parliament; the respective remedies of civil injuries; the several species of temporal offences, with the manner and degree of punishment; and an infinite number of minuter particulars, which diffuse themselves as extensively as the ordinary distribution of common justice requires. Thus, for example, that there shall be four superior courts of record, the chancery, the king’s bench, the common pleas, and the exchequer; --- that the eldest son alone is heir to his ancestor; --- that property may be acquired and transferred by writing; --- that a deed is of no validity unless sealed; --- that wills shall be construed more favorably, and deeds more strictly; --- that money lent upon bond is recoverable by action of debt; --- that breaking the public peace is an offence, and punishable by fine and imprisonment; --- all these are doctrines that are not set down in any written statute or ordinance, but depend merely upon immemorial usage, that is, upon common law, for their support.
Some have divided the common law into two principal grounds or foundations: 1. established customs; such as that where there are three brothers, the eldest brother shall be heir to the second, in exclusion of the youngest: and 2. established rules and maxims; as, “that the king can do no wrong, that no “man shall be found to accuse himself,” and the like. But I take these to be one and the same thing. For the authority of these maxims rests entirely upon general reception and usage; and the only method of proving, that this or that maxim is a rule of the common law, is by shewing that it hath been always the custom to observe it.
But here a very natural, and very material, question arises: how are these customs or maxims to be known, and by whom is their validity to be determined? The answer is, by the judges in the several courts of justice. They are the depositary of the laws; the living oracles, who must decide in all cases of doubt, and who are bound by an oath to decide according to the law of the land. Their knowledge of that law is derived from experience and study; from the “viginti annorum lucubrationes,” which Fortescue” mentions; and from being long personally accustomed to the judicial decisions of their predecessors. And indeed these judicial decisions are the principal and most authoritative evidence, that can be given, of the existence of such a custom as shall form a part of the common law. The judgment itself, and all the proceedings previous thereto, are carefully registered and preserved, under the name of records, in publick repositories set apart for that particular purpose; and to them frequent recourse is had, when any critical question arises, in the determination of which former precedents may give light or assistance. And therefore, even so early as the conquest, we find the “praeteritorum memoria eventorum” reckoned up as one of the chief qualifications of those who were held to be “legibus patriae optime instituti.” For it is an established rule to abide by former precedents, where the same points come again in litigation; as well to keep the scale of justice even and steady, and not liable to waver with every new judge’s opinion; as also because the law in that case being solemnly declared and determined, what before was uncertain, and perhaps indifferent, is now become a permanent rule, which it is not in the breast of any subsequent judge to alter or vary from, according to his private sentiments: he being sworn to determine, not according to his own private judgment, but according to the known laws and customs of the land; not delegated to pronounce a new law, but to maintain and expound the old one. Yet this rule admits of exception, where the former determination is most evidently contrary to reason; much more if it be contrary to the divine law. But even in such cases the subsequent judges do not pretend to make a new law, but to vindicate the old one from misrepresentation. For if it be found that the former decision is manifestly absurd or unjust, it is declared, not that such a sentence was bad law, but that it was not law; that is, that it is not the established custom of the realm, as has been erroneously determined. And hence it is that our lawyers are with justice so copious in their ecomiums on the reason of the common law; that they tell us, that the law is the perfection of reason, that it always intends to conform thereto, and that what is not reason is not law. Not that the particular reason of every rule in the law can at this distance of time be always precisely assigned; but it is sufficient that there be nothing in the rule flatly contradictory to reason, and then the law will presume it to be well founded. And it hath been an antient observation in the laws of England, that whenever a standing rule of law, of which the reason perhaps could not be remember or discerned, hath been wantonly broke in upon by statutes or new resolutions, the wisdom of the rule hath in the end appeared from the inconveniences that have followed the innovation.
The doctrine of the law then is this: that precedents and rules must be followed, unless flatly absurd or unjust: for though their reason be not obvious at first view, yet we owe such a deference to former times as not to suppose they acted wholly without consideration. To illustrate this doctrine by examples. It has been determined, time out of mind, that a brother of the half blood (i.e. where they have only one parent the same, and the other different) shall never succeed as heir to the estate of his half brother, but it shall rather escheat to the king, or other superior lord. Now this is a positive law, fixed and established by custom, which custom is evidenced by judicial decisions; and therefore can never be departed from by any modern judge without a breach of his oath and the law. For herein there is nothing repugnant to natural justice; though the reason of it, drawn from the feodal law, may not be quite obvious to every body. And therefore, on account of a supposed hardship upon the half brother, a modern judge might wish it had been otherwise settled; yet it is not in his power to alter it. But if any court were now to determine, that an elder brother of the half blood might enter upon and seise any lands that were purchased by his younger brother, no subsequent judges would scruple to declare that such prior determination was unjust, was unreasonable, and therefore was not law. So that the law, and the opinion of the judge are not always convertible terms, or one and the same thing; since it sometimes may happen that the judge may mistake the law. Upon the whole however, we may take it as a general rule, “that the “decisions of courts of justice are the evidence of what is commom law:” in the same manner as, in the civil law, what the emperor had once determined was to serve for a guide for the future.
The decisions therefore of courts are held in the highest regard, and are not only preserved as authentic records in the treasuries of the several courts, but are handed out to public view in the numerous volumes of reports which furnish the lawyer’s library. These reports are histories of the several cases, with a short summary of the proceedings, which are preserved at large in the record; the arguments on both sides; and the reasons the court gave for their judgment; taken down in short notes by persons present at the determination. And these serve as indexes to, and also to explain, the records; which always, in matters of consequence and nicety, the judges direct to be searched. The reports are extant in a regular series from the reign of king Edward the second inclusive; and from his time to that of Henry the eighth were taken by the prothonotaries, or chief scribes of the court, at the expense of the crown, and published annually, whence they are known under the denomination of the year books. And it is much to be wished that this beneficial custom had, under proper regulations, been continued to this day for, though king James the first at the instance of lord Bacon appointed two reporters with a handsome stipend for this purpose, yet that wise institution was soon neglected, and from the reign of Henry the eighth to the present time this talk has been executed by many private and contemporary hands; who sometimes through haste and inaccuracy, sometimes through mistake and want of skill, have published very crude and imperfect (perhaps contradictory) accounts of one and the same determination. Some of the most valuable of the antient reports are those published by lord chief justice Coke; a man of infinite learning in his profession, though not a little infected with the pendantry and quaintness of the times he lived in, which appear strongly in all his works. However his writings are so highly esteemed, that they are generally cited without the author’s name.
Besides these reporters, there are also other authors, to whom great veneration and respect is paid by the students of the common law. Such as Glanvil and Bracton, Britton and Fleta, Littleton and Fitzherbert, with some others of antient date, whose treatises are cited as authority; and are evidence that cases have formerly happened in which such and such points were determined, which are now become settled and first principles. One of the last of these methodical writers in point of time, whose works are of any intrinsic authority in the courts of justice, and do not entirely depend on the strength of their quotations from older authors, is the fame learned judge we have just mentioned, sir Edward Coke; who hath written four volumes of institutes, as he is pleased to call them, though they have little of the institutional method to warrant such a title. The first volume is a very extensive comment upon a little excellent treatise of tenures, compiled by judge Littleton in the reign of Edward the fourth. This comment is a rich mine of valuable common law learning, collected and heaped together from the antient reports and year books, but greatly defective in method. The second volume is a comment upon many old acts of parliament, without any systematical order; the third a more methodical treatise of the pleas of the crown; and the fourth an account of the several species of courts.
And thus much for the first ground and chief corner stone of the laws of England, which is, general immemorial custom, or common law, from time to time declared in the decisions of the courts of justice; which decisions are preserved among our public records, explained on our reports, and digested for general use in the authoritative writings of the venerable sages of the law.
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