It is a commonplace that Rome's greatest contribution to the modern world is its law. Whether this is strictly true or not, Roman law is certainly the basis of the law of Western Europe (with the exception of England and Scandinavia), of much of Africa including South Africa, Ethiopia and in general the former colonies of countries in continental Europe, of Quebec and Louisiana, of Japan and Ceylon and so on. Perhaps even more important for the future is that International law is very largely modelled, by analogy, on Roman law. Just think of the perfectly serious arguments of a few years ago as to whether outer space (including the moon and planets) were res nullius or res communes and whether they were, or were not, susceptible of acquisition by occupatio. This persistence of Roman law has had undesirable consequences. First, Roman law as an academic subject has got into the hands of lawyers whose love of technicalities has frightened off classical scholars who tend not to use the legal sources. Secondly, scholars of antiquity, since Roman law is left well alone, have also been reluctant to look at other ancient legal systems. So have lawyers since these other systems have no ‘practical” value. Thirdly, following upon these but worse still, the usefulness of Roman law for later ages, coupled with its enforced isolation from other systems of antiquity, has often led to an exaggerated respect for it, and to its being regarded as well-nigh perfect, immutable, fit for all people. Many in “the Age of Reason” were ready to regard Roman law as “the Law of Reason”.
Paul, Gaius, and the ‘Law of Persons’: The Conceptualization of Roman Law in the Early Classical Period