[ULPIANUS libro primo institutionum. ] §1.1.6.prIus ciuile est, quod neque in totum a naturali uel gentium recedit nec per omnia ei seruit: itaque cum aliquid addimus uel detrahimus iuri communi, ius proprium, id est ciuile efficimus.
[ULPIANUS in the first book of the Institutes.] Civil law is that which neither departs entirely from natural law or the law of nations, nor serves them in all respects; therefore, when we add anything to or subtract anything from the common law, we produce a proper law, that is, civil law.
§1.1.6.1Hoc igitur ius nostrum constat aut ex scripto aut sine scripto, ut apud Graecos: τῶν νόμων οἳ μὲν ἔγγραφοι, οἳ δὲ ἄγραφοι.
This law of ours, therefore, consists either of written or of unwritten law, as among the Greeks: "of the laws, some are written, others unwritten."