When the ventilator tube was removed and he could again speak, he immediately began to discuss with me the ideas and arguments on which he had been working when I had to rush him to the emergency room. […] The next day […] the graduate student whose thesis Parfit was scheduled to examine, came for a visit, during which Parfit delightedly insisted on discussing the thesis with him for several hours. A nurse, having noticed how many visitors Parfit had had, exclaimed, “Jesus Christ had only 12 disciples – but look at you! You’re clearly a very important man. What do you do?” “I work,” Parfit replied with a smile, “on what matters.”
The one exception to his monomaniacal commitment to his philosophy was his architectural photography, samples of which appear on the covers of his four books. But he gave that up many years ago when he came to fear that he might not live long enough to complete his remaining work in philosophy.
There are many anecdotes about the ways in which Parfit simplified his life to take as little time as possible away from his work. He ate only twice a day, with almost no variation in what he had at each meal. He ate cold food only, mostly fruits and vegetables without any preparation. Even when he could have had freshly ground coffee with only a minute’s additional preparation, he drank instant coffee, often with water straight from the tap. He sometimes kept a book open on the chest-of-drawers so that he could read while putting on his socks. His speed in reading was phenomenal, in part because his power of concentration was prodigious. Wanting to preserve his mental and physical capacities, he took an hour every evening during his last decade to get vigorous exercise on a stationary bicycle, but never without reading philosophy (or occasionally physics) while furiously pedalling.