Definition
In civil and canon law tradition, *naturale* (also appearing as *naturalis*) denotes that which arises from nature, natural condition, or the natural order — as distinguished from that which is created by positive law, custom, or human institution. The term appears most frequently in legal Latin compounds and phrases rather than as a standalone term.
Primary uses in legal contexts include:
1. **Naturale obligatio** — A natural obligation: a duty that arises from equity, conscience, or natural law but that lacks the coercive enforcement mechanism of a civil obligation. It binds the conscience but cannot be sued upon directly in court.
2. **Naturale (as a descriptor of personal status)** — In feudal and early common law usage, *naturale* or *naturalis* described a person's relationship to a lord or to the land by birth — a *nativus naturalis* being one born into bondage or villeinage, as opposed to one who became subject by contract or conquest.
3. **Naturale jus** — Natural right or natural law; the law held to be inherent in reason and nature rather than enacted by a sovereign.
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Common Language
**Modern common usage (Wiktionary):** *Natural* (the English cognate) means existing in or caused by nature; not artificial or man-made. As an adjective it commonly describes things unaltered by human intervention.
**Historical common usage (Webster's 1913):** *Natural* — "Of or pertaining to nature; produced or effected by nature, or by the laws of nature; pertaining to the universe; as, natural causes... Distinguished from moral or spiritual."
**Editorial note:** The gap here is significant for legal research. In ordinary English, "natural" simply means occurring in nature. In legal Latin usage, *naturale* carries a technical load: it marks the distinction between obligations, rights, and duties that exist prior to and independent of enacted law versus those created by the state. A *naturale obligatio* is not merely an informal duty — it has specific legal consequences (such as barring the recovery of a voluntary payment made in satisfaction of it). The common meaning of "natural" does not alert the researcher to these technical effects.
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Why It Matters in Research
Researchers encountering *naturale* in historical legal texts — particularly in civil law materials, ecclesiastical records, feudal charters, or early treatises — must resist reading the term as a simple synonym for "ordinary" or "biological." The word operates as a term of art that places the subject matter within a specific jurisprudential framework.
**Key research traps:**
- **Natural obligation vs. civil obligation:** This distinction is substantive, not rhetorical. In civil law systems (and in equity-influenced common law contexts), a natural obligation may bar the recovery of voluntarily rendered performance even though it could not have been compelled. Missing this distinction will lead to misreading the legal effect of transactions in historical sources.
- **Status terminology:** In feudal records, *naturalis* applied to persons signals questions of villeinage, nativity, and heritable status that are distinct from questions of citizenship or nationality. Do not conflate *naturalis* (born to a condition) with *naturalis* in the sense of natural law.
- **Compounds and phrases:** *Naturale* rarely appears in isolation in legal documents. It typically anchors a phrase — *obligatio naturalis*, *jus naturale*, *dominus naturalis*, *heres naturalis*. Each compound has its own specific meaning. Searching for *naturale* alone will miss much of the relevant material; searching the compound terms will be more productive.
- **Civil law corpus connections:** Entries under *obligatio*, *jus naturale*, and *aequitas* in the Law Mind corpus will frequently intersect with *naturale*. The concept underpins discussions of equity, conscience, and the enforcement limits of law throughout the civil and canon law tradition.
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Historical Dictionary Support
Bouvier's Law Dictionary does not carry a standalone entry for *naturale* as an independent term. The source material provided yields adjacent entries (*æs alienum*, *æstimatio capitis*) that confirm Bouvier's reliance on Latin civil law vocabulary but do not directly address *naturale*.
This silence is itself instructive. Bouvier organized his dictionary primarily around common law terms of art and selected civil law terms of direct relevance to American practice. *Naturale* as a pure civil law or scholastic jurisprudence term fell outside that practical scope. Researchers should not infer from Bouvier's omission that the term was unimportant — rather, its home is in the civil law tradition (the Digest, Institutes, Glossators, and canonists) rather than in the Anglo-American common law sources Bouvier prioritized.
For substantive treatment, the richer historical sources are the civilian tradition: Justinian's *Corpus Juris Civilis* (particularly Digest 44.7 on obligations), and the scholastic natural law literature running from Aquinas through Grotius and Pufendorf. Common law dictionaries including Jacob's *Law Dictionary* and Tomlin's *Law Dictionary* address related phrases (*natural obligation*, *natural right*, *natural person*) with more depth than they treat the Latin root alone.
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Jurisdictional Note
The concept of *naturale obligatio* retains operative legal significance in Louisiana, Quebec, and other mixed or civil law jurisdictions, where the civil law tradition was not displaced by common law reception. In purely common law jurisdictions, the doctrine survives primarily in equity and in the law governing voluntary payments, moral obligations as consideration, and the enforceability of time-barred debts.
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