Natural law and natural rights / Morton J. Horwitz -- "Protestant" political theory and the significance of rights / Sean Coyle -- Human rights in the emerging world order / Joseph Raz -- Humanist and political perspectives on human rights / Pablo Gilabert -- Are there still any natural rights? / Hillel Steiner -- Value pluralism and the two concepts of rights / Horacio Spector -- The analytical foundations of justice / N.E. Simmonds -- Fundamental legal conceptions reconsidered / Andrew Halpin -- Ross and Olivecrona on rights / Brian H. Bix -- A right to do wrong? Two conceptions of moral rights / William A. Edmundson -- The nature of rights / Leif Wenar -- Theories of rights : is there a third way? / Matthew H. Kramer and Hillel Steiner -- Bipolar obligation / Stephen Darwall -- Giving claim-rights their due / Margaret Gilbert -- The nature of rights debate rests on a mistake / Siegfried Van Duffel -- Duties and their direction / Gopal Sreenivasan -- What demands are rights? An investigation into the relation between rights and reasons / Alon Harel -- Rights and recognition / David Lyons -- The rights recognition thesis : defending and extending Green / Gerald F. Gaus -- On conflicts between rights / Christopher Heath Wellman -- American balancing and German proportionality : the historical origins / Moshe Cohen-Eliya and Iddo Porat -- Security and liberty : the image of balance / Jeremy Waldron -- Proportionality Stricto Sensu (Balancing) / Aharon Barak -- The weight formula / Robert Alexy -- On Robert Alexy's weight formula for weighing and balancing / Lars Lindahl.