There seems little doubt that comparative studies are the vogue in these days of “new frontiers” and “new directions.” There is even a new quarterly entitled Comparative Studies in Society and History. To be sure, comparative studies are as old as historiography, but there is a new insistence about them today that is unmistakable. Geographers have so expanded their specialty in depth as superficially to become historians. Anthropologists are no longer content merely to delineate present-day primitive cultures. They have broadened their discipline to include other cultures “not quite up to our date,” earlier cultures, and even our own. What is more, they have begun to explore behind the facade, to be aware of the influence of the past and thus, superficially at least, to become historians. A like tendency has long been afoot among sociologists, economists, political scientists, students of literature, students of the arts, and philosophers.