New York, Bern, Frankfurt/M., Paris, 1988. XII, 187 pp.
Contents: A historical analysis of the ethics of Moore, Prichard, Ayer, Toulmin, and R.M. Hare, with a lengthy study of Hare.
Goal is to find a proof of moral obligation. Hare's theory combined with insights from Alan Gewirth finally does yield
a proof of moral obligation.