Political philosopher and practical man of affairs, Professor Catlin offers in this small volume, which is made up of the Well ?ectures of 1957 at the University of North Carolina, some approaches to the preservation of ""civil peace, internal and external"". If the goal is the achievement of peaceful coexistence of governments or peoples, the problem then is the choice of means. Because the author subscribes to the belief that the concept of state sovereignty is ded, he looks to the formation of a World Commonwealth of Free Nations as embodying, both economically and politically, the most feasible and most logical development of the state sovereignty principle. Since this is a matter for the future, meantime support should be given to a European Union, and beyond that, to an Atlantic Community. The essays are sound, idealistic and, most important, visionary. For the student of political affairs.