The first Darwin Lecture was given in 1977 by Karl Popper. He there said that he had known Darwin’s face and name ‘for as long as I can remember’ (‘NSEM’ p. 339); for his father’s library contained a portrait of Darwin and translations of most of Darwin’s works (‘IA’, p. 6). But it was not until Popper was in his late fifties that Darwin begin to figure importantly in his writings, and he was nearly seventy when he adopted from Donald Campbell the term ‘evolutionary epistemology’ as a name for his theory of the growth of knowledge (OK, p. 67). There were people who saw evolutionary epistemology as a major new turn in Popper’s philosophy.