H. L. A. Hart

Some, I know, find the political and moral insight of the Utilitarians a very simple one, but we should not mistake this simplicity for superficiality nor forget how favorably their simplicities compare with the profoundities of other thinkers.

H. L. A. Hart, ‘Positivism and the Separation of Law and Morals’, Harvard Law Review, vol. 71, no. 4 (February, 1958), p. 596