Definition
A Latin phrase meaning "by the civil law." Used in legal texts to indicate that a rule, right, obligation, or status derives from or is governed by the civil law — that is, Roman law as systematized in the Corpus Juris Civilis, as distinguished from natural law, common law, canon law, or the law of nations. The phrase functions as a shorthand attribution, signaling the origin or authority of a legal proposition rather than describing a doctrine in its own right.
Why It Matters in Research
JURE CIVILI is a locative phrase, not a substantive doctrine. Its importance in the Law Mind corpus is navigational: encountering it in a source tells you the writer is invoking Roman or civil law ancestry for a proposition, which carries interpretive weight depending on the era and jurisdiction. In early English common law writing — including Blackstone, whose Commentaries are the anchor citation in both historical dictionary entries — civil law concepts were frequently introduced with this phrase to signal their foreign origin, sometimes to distinguish them from established common law rules, sometimes to borrow their authority. Researchers should be alert to the fact that an English or American writer using JURE CIVILI may be describing a rule that was never actually adopted in the jurisdiction at hand; the phrase often marks aspiration or contrast rather than positive law. Conversely, in civilian jurisdictions and treatises of international law, the phrase carries direct operative weight. The distinction matters: the same phrase can function as a disavowal ("by the civil law, but not here") or an affirmation ("by the civil law, which we follow"), and context is everything.
The phrase also clusters with companion Latin locatives — JURE GENTIUM, JURE NATURAE, JURE CANONICO — that together form a taxonomy of legal authority frequently used in pre-nineteenth-century treatises. A researcher working through historical texts on property, succession, or status will encounter these phrases as a system; understanding JURE CIVILI in isolation is less useful than understanding how it sits against those neighbors.
Historical Dictionary Support
Both Black's and Burrill's treat JURE CIVILI identically: a bare translation ("by the civil law") followed by the same two citations — Institutes 1.3.4 and 1 Blackstone's Commentaries 423. The agreement is total, and neither source attempts elaboration. This brevity is itself informative. Historical legal dictionaries treated the phrase as self-evident to any trained lawyer of the period, who would have been familiar with the Institutes and with Blackstone's invocation of civil law authority on the law of persons. The citations point to discussions of the status of slaves and freedpersons — a context in which Roman civil law rules were being described, distinguished, or compared to English law rather than applied directly. Researchers should not treat the dictionary entries as implying that JURE CIVILI had a fixed technical meaning beyond its translation; it did not. Its meaning derived entirely from context and the body of doctrine it modified.
Jurisdictional Note
In common law jurisdictions, JURE CIVILI typically appears in a comparative or historical register rather than as a positive source of law. In mixed or civilian jurisdictions — Louisiana, Quebec, Scotland, South Africa — the phrase retains stronger operative force, as civil law is a direct component of the applicable legal system. International law scholarship, which drew heavily on civilian sources through the nineteenth century, uses the phrase as a standard attribution throughout the period.