"When we regard a man as morally responsible for an act, we regard him as a legitimate object of moral praise or blame in respect of it. But it seems plain that a man cannot be a legitimate object of moral praise or blame for an act unless in willing the act he is in some important sense a ‘free’ agent. Evidently free will in some sense, therefore, is a precondition of moral responsibility."
C. Arthur Campbell
(1897-1973) Glasgow University Professor of Logic and Rhetoric (1938-61), Dean of Faculties (1964-67)
In Defence of Free Will, 1967