Commentaries on the Laws of England, Book the First

by Sir William Blackstone

[] Dewes. 479.

[c] Ibid. 645.

[d] King James's works. 557, 531.

But, whatever might be the sentiments of some of our princes, this was never the language of our antient constitution and laws. The limitation of the regal authority was a first and essential principle in all the Gothic systems of government established in Europe; though gradually driven out and overborne, by violence and chicane, in most of the kingdoms on the continent. We have seen, in the preceding chapter, the sentiments of Bracton and Fortescue, at the distance of two centuries from each other. And sir Henry Finch, under Charles the first, after the lapse of two centuries more, though he lays down the law of prerogative in very strong and emphatical terms, yet qualifies it with a general restriction, in regard to the liberties of the people. "The king hath a prerogative in all things, that are not injurious to the subject; for in them all it must be remembered, that the king's prerogative stretcheth not to the doing of any wrong[e]." Nihil enim aliud potest rex, nisi id solum quod de jure potest[f]. And here it may be some satisfaction to remark, how widely the civil law differs from our own, with regard to the authority of the laws over the prince, or (as a civilian would rather have expressed it) the authority of the prince over the laws. It is a maxim of the English law, as we have seen from Bracton, that "rex debet esse sub lege, quia lex facit regem:" the imperial law will tell us, that "in omnibus, imperatoris excipitur fortuna; cui ipsas leges Deus subjecit[g]." We shall not long hesitate to which of them to give the preference, as most conducive to those ends for which societies were framed, and are kept together; especially as the Roman lawyers themselves seem to be sensible of the unreasonableness of their own constitution. "Decet tamen principem," says Paulus, "servare leges, quibus ipse solutus est[h]." This is at once laying down the principle of despotic power, and at the same time acknowleging it's absurdity.

[e] Finch. L. 84, 85.

[f] Bract. l. 3. tr. 1. c. 9.

[g] Nov. 105. §. 2.

[h] Ff. 32. 1. 23.

By the word prerogative we usually understand that special pre-eminence, which the king hath, over and above all other persons, and out of the ordinary course of the common law, in right of his regal dignity. It signifies, in it's etymology, (from prae and rogo) something that is required or demanded before, or in preference to, all others. And hence it follows, that it must be in it's nature singular and eccentrical; that it can only be applied to those rights and capacities which the king enjoys alone, in contradistinction to others, and not to those which he enjoys in common with any of his subjects: for if once any one prerogative of the crown could be held in common with the subject, it would cease to be prerogative any longer. And therefore Finch[] lays it down as a maxim, that the prerogative is that law in case of the king, which is law in no case of the subject.

[] Finch. L. 85.