The three essays in this collection (the third in a series) explore the implications of free speech, the roots of American foreign policy, and the relation between U.S. political tradition and the formulation of policies on energy. Each essay is accompanied by a commentary. The essays, their authors, and the commentaries are: "The Pig in the Parlor: Weighing the Price of Free Speech" (Leslie Pickering Francis, commentary by Delmont Oswald); "The City on the Hill: America's Role in the World" (Joan Hoff, commentary by Kenneth L. Gladish); and "You Can't Always Get What You Want: The Paralysis of American Energy Policy" (Howard Schwartz, commentary by Henry Hirschbiel). (DB)