Part I: Origins_x000B_On the History of “Theory” and “Praxis” by Nicholas Lobkowicz_x000B_Creatures of a Day: Thought and Action in Thucydides by J. Peter Euben_x000B_Plato and Aristotle: The Unity Versus the Autonomy of Theory and Practice by Terence Ball Part II: Developments_x000B_Kant on Theory and Practice by Carl Raschke_x000B_Theory and Practice in Hegel and Marx: An Unfinished Dialogue by Peter Fuss_x000B_The Unity of Theory and Practice: The Science of Marx and Nietzsche by Edward Andrew Part II: Dilemmas and New Directions_x000B_Hannah Arendt: The Ambiguities of Theory and Practice by Richard J. Bernstein_x000B_Rebels, Beginners, and Buffoons: Politics as Action by Raymond L. Nichols_x000B_How People Change Themselves: The Relationship between Critical Theory and Its Audience by Brian Fay _x000B_Nine distinguished contributors - philosophers and political scientists at universities and colleges in the United States, Europe, Canada, and Australia - write essays for this volume in political philosophy. The book is dedicated to the memory of Hannah Arendt, the writer and philosopher who died in 1975. The contributors discuss various aspects of the concepts of theory and practice and their interrelationship. All of the essays were written expressly for this volume. In an introduction, Professor Ball, the volume editor, notes that the essays reflect the diversity of conceptions of theory, of practice, and of their conceptual and practical interrelations, and that the contributors explore various ways and byways of approaching the age-old questions of theory and its relation to practice._x000B_