Reason is the life of the law; nay, the common law itself is nothing else but reason... The law, which is perfection of reason.

The First Part of the Institutes of the Laws of England, or, A Commentary on Littleton (London, 1628, ed. F. Hargrave and C. Butler, 19th ed., London, 1832), Third Institute. Compare: "Let us consider the reason of the case. For nothing is law that is not reason", Sir John Powell, Coggs vs. Bernard, 2 Ld. Raym. Rep. p. 911.