This volume presents twelve original papers on constructivism--some sympathetic, others critical--by a distinguished group of moral philosophers. "Kantian constructivism holds that moral objectivity is to be understood in terms of a suitably constructed social point of view that all can accept. Apart from the procedure of constructing the principles of justice, there are no moral facts." So wrote John Rawls in his highly influential 1980 Dewey lectures "Kantian Constructivism in Moral Theory." Since then there has been much discussion of constructivist understandings, Kantian or otherwise,...