"Reason is the life of the law; nay, the common law itself is nothing else but reason - the law which is perfection of reason"
About this Quote
The subtext is defensive and strategic. Coke is writing in an England where the monarchy’s “reason of state” could be invoked to bulldoze ordinary courts. Declaring the common law to be reason itself is a way to deny that the king (or any executive authority) has a superior, freer form of rationality. It’s also a way to sanctify precedent: old decisions aren’t old because they’re old; they’re old because they embody accumulated reasoning. Tradition gets rebranded as logic.
The line also flatters the legal profession’s self-image. If common law is “perfection,” then lawyers and judges become technicians of the highest human faculty, not brokers for the powerful. Of course, the irony is that “reason” here isn’t a neutral, universal calculator; it’s the kind of reason that grows inside institutions, trained by elite education, and enforced through property and hierarchy. Coke’s brilliance is that he doesn’t hide the politics of that claim - he refines it into rhetoric so clean it can pass as inevitability.
Quote Details
| Topic | Reason & Logic |
|---|---|
| Source | Verified source: The First Part of the Institutes of the Laws of England (Edward Coke, 1628)
Evidence: Reason is the life of the law, nay the common law itself is nothing else but reason: which is to be understood of an artificial perfection of reason gotten by long study, observation and experience and not every man’s natural reason… (Book 2, Chapter 6, folio 97b (also cited as Inst. I, §138, 97a–97b)). This is widely cited as Coke’s original wording in his own work ("Coke upon Littleton"), i.e., Edward Coke’s commentary on Littleton that forms the First Part of his Institutes. Modern secondary sources consistently locate it at fol. 97b and/or at Inst. I, §138 (97a–97b). The popular quote variant you supplied typically splices two nearby ideas: (i) “Reason is the life of the law … common law … nothing else but reason” and (ii) “the law … is the perfection of reason” (often appearing in the same discussion as “no man (out of his own private reason) ought to be wiser than the law, which is the perfection of reason”). I was able to verify the folio/section location and Coke’s ‘artificial perfection of reason’ phrasing via scholarly/academic citations, but I did not retrieve a scan of the 1628 first edition page itself in this browsing session (which is why confidence is medium rather than high). Other candidates (1) The Tree of Legal Knowledge (John V. Orth, 2023) compilation96.7% ... Edward Coke , Co Litt § 138 ( ' Reason is the life of the law ; nay , the common law itself is nothing else but r... |
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Citation Formats
APA Style (7th ed.)
Coke, Edward. (2026, March 1). Reason is the life of the law; nay, the common law itself is nothing else but reason - the law which is perfection of reason. FixQuotes. https://fixquotes.com/quotes/reason-is-the-life-of-the-law-nay-the-common-law-15595/
Chicago Style
Coke, Edward. "Reason is the life of the law; nay, the common law itself is nothing else but reason - the law which is perfection of reason." FixQuotes. March 1, 2026. https://fixquotes.com/quotes/reason-is-the-life-of-the-law-nay-the-common-law-15595/.
MLA Style (9th ed.)
"Reason is the life of the law; nay, the common law itself is nothing else but reason - the law which is perfection of reason." FixQuotes, 1 Mar. 2026, https://fixquotes.com/quotes/reason-is-the-life-of-the-law-nay-the-common-law-15595/. Accessed 18 Mar. 2026.











