[GAIUS libro primo institutionum. ] §1.1.9.prOmnes populi, qui legibus et moribus reguntur, partim suo proprio, partim communi omnium hominum iure utuntur.
[GAIUS in the first book of Institutes.]\n\nAll peoples who are governed by laws and customs use partly their own peculiar law, and partly the law common to all mankind.
nam quod quisque populus ipse sibi ius constituit, id ipsius proprium ciuitatis est uocaturque ius ciuile, quasi ius proprium ipsius ciuitatis: quod uero naturalis ratio inter omnes homines constituit, id apud omnes peraeque custoditur uocaturque ius gentium, quasi quo iure omnes gentes utuntur.
For the law which each people has established for itself is peculiar to that state itself and is called civil law, as being, so to speak, the law peculiar to that state itself; but what natural reason has established among all mankind is observed equally among all peoples and is called the law of nations, as being, so to speak, the law which all nations use.