Introduction / James Bohman and Matthias Lutz-Bachmann -- 1. Kant and Cosmopolitanism / Martha Nussbaum -- 2. Kant's Idea of Peace and the Philosophical Conception of a World Republic / Matthias Lutz-Bachmann -- 3. Kant's "Toward Perpetual Peace" as Historical Prognosis from the Point of View of Moral Duty / Karl-Otto Apel -- 4. Kant's Idea of Perpetual Peace, with the Benefit of Two Hundred Years' Hindsight / Jurgen Habermas -- 5. Is Universalism a Moral Trap? The Presuppositions and Limits of a Politics of Human Rights / Axel Honneth -- 6. The Public Spheres of the World Citizen / James Bohman -- 7. On the Idea of a Reasonable Law of Peoples / Thomas McCarthy -- 8. Communitarian and Cosmopolitan Challenges to Kant's Conception of World Peace / Kenneth Baynes -- 9. Cosmopolitan Democracy and the Global Order: A New Agenda / David Held