Although ancient Greece perhaps affords the earliest examples of comparative law in action, Zaleukos and Lykourgas being said to have traveled widely gathering information about customary and written law in preparation for the drafting of their codes,' modern Anglo-American comparatists, with a few notable exceptions,2 have left the law of ancient Greece to be studied by archaeologists, philosophers and historians. However, even though these students produced excellent studies, work by jurists is needed. Professor Kelsen's studies in international and maritime law illustrate the benefits to be gained by such study. In homage to him, this modest essay-tracing a few ideas generated in a conversation between Pericles and Protagoras-is presented.