He gave the Romanes Lecture, entitled "Science and the human purpose", at the University of Oxford in 1978; and in 1988 he gave the Dimbleby Lecture, "Knowledge itself is power".
Han höll Romanesföreläsningen "Science and the human purpose" 1978 vid University of Oxford, och 1988 höll han Dimblebyföreläsningen "Knowledge itself is power".