"The most universal and effectual way of discovering the true meaning of law, when the words are dubious, is by considering the reason and spirit of it; or the cause which moved the legislator to enact it. for when this reason ceased, the law itself ought likewise to cease with it"
About this Quote
The subtext is power, politely expressed. Blackstone gives judges permission to treat law as a tool rather than a fetish. “Dubious words” are not a dead end; they’re an invitation to import context, values, and practical consequences. That sounds modest, but it’s expansive: once you authorize “spirit,” you authorize a certain moral and political sensibility to decide what counts as the law’s “reason.” In practice, the judge becomes a curator of legislative purpose, and purpose is rarely singular, uncontested, or static.
Context matters: Blackstone wrote while trying to systematize English common law for an 18th-century audience, presenting it as rational and stable. His formulation reassures readers that law isn’t arbitrary: it has causes, aims, internal logic. At the same time, it anticipates modern fights over “original intent” versus “living” interpretation. His final claim - when the reason ceases, the law should cease - is less a neutral rule than an argument for adaptability, smuggled in as common sense.
Quote Details
| Topic | Justice |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Blackstone, William. (2026, January 11). The most universal and effectual way of discovering the true meaning of law, when the words are dubious, is by considering the reason and spirit of it; or the cause which moved the legislator to enact it. for when this reason ceased, the law itself ought likewise to cease with it. FixQuotes. https://fixquotes.com/quotes/the-most-universal-and-effectual-way-of-173723/
Chicago Style
Blackstone, William. "The most universal and effectual way of discovering the true meaning of law, when the words are dubious, is by considering the reason and spirit of it; or the cause which moved the legislator to enact it. for when this reason ceased, the law itself ought likewise to cease with it." FixQuotes. January 11, 2026. https://fixquotes.com/quotes/the-most-universal-and-effectual-way-of-173723/.
MLA Style (9th ed.)
"The most universal and effectual way of discovering the true meaning of law, when the words are dubious, is by considering the reason and spirit of it; or the cause which moved the legislator to enact it. for when this reason ceased, the law itself ought likewise to cease with it." FixQuotes, 11 Jan. 2026, https://fixquotes.com/quotes/the-most-universal-and-effectual-way-of-173723/. Accessed 13 Feb. 2026.




