These important essays by leading thinkers center around two principal topics: the nature of moral judgement, and the part played by social utility in determining right and wrong. The contributors include R.M. Hare, John R. Searle, John Rawls, C.L. Stevenson, G.E. Moore, P.T. Geach, PhilippaFoot, J.O. Urmson, and J.J.C. Smart.