Contents -- Acknowledgments -- Introduction -- Realism and Utopianism in World Affairs -- No Peace without Arms -- Perpetual Peace? -- Imperialism, Nationalism, Chauvinism -- On the Study of International Relations -- World Politics in the Mid-Twentieth Century -- The Economic Road to War -- The Tragic Element in Modern International Conflict -- The Study of International Politics -- Courage or Perdition? -- Beyond National Interest -- Reflections on the State of Political Science -- History and Diplomacy as Viewed by a Diplomatist -- The Role of the Learned Man in Government -- The Ethical Dimensions of Diplomacy -- Realism, Neorealism, and American Liberalism.