Principle That Laws Apply to What Usually Occurs

Notes

1. §1.3.3.prconstitui oportet — The passive infinitive `constitui` is used with the accusative subject `Iura` (laws) as the complement of the impersonal verb `oportet` (it is necessary / ought).
2. §1.3.3.prin his, quae — The preposition `in` governs the ablative `his` (neuter plural demonstrative), meaning "in those things/cases." This `his` acts as the antecedent for the relative pronoun `quae`. In the subsequent clause `non quae`, the prepositional phrase `in (his)` is understood by ellipsis.
3. §1.3.3.prἐπὶ τὸ πλεῖστοn — A Greek idiomatic expression meaning "for the most part" or "generally" (corresponding to Latin *plerumque*). In the manuscript tradition, the final letter is often transliterated as `n` instead of the Greek letter nu. It stands in contrast to `ἐκ παραλόγου`, which means "contrary to expectation" or "unexpectedly."