I first met Charlie Martin in 1953 when I was taking the B.Phil. degree in Oxford. Charlie was doing a Ph.D. in Cambridge, where his supervisor was John Wisdom, his first real teacher. Charlie had come over from Cambridge with his wife and small daughters, to live in Oxford for a year. I think that he wanted a bit more philosophical action than could be found in Cambridge at that time. We used to talk a bit, although I did not understand much of what he was saying. But there could be no doubt of his passionate devotion to his subject or of his force and ability.