The target of the four-minute mile then came into view.  It was talked about in the ’30s, and the Swedes got very close, but it had just taken us after the war to gradually come down to a time closer, and in ’53, which was the year, if you remember, when Everest was climbed by a British Commonwealth team, I ran 4:03, and I felt the next year it should be possible. It was my last year anyway, and so I trained hard through the winter with two friends, Chris Chataway and Chris Brasher, Brasher from Cambridge, Chataway from Oxford, and they helped with the pace-making, and really made it possible because you could only break a time really by running evenly.  It’s a question of spreading the available energy, aerobic and anaerobic, evenly over four minutes.  If you run one part very much too fast, you pay a price.  If you run another part more slowly your overall time is slower.  So that was really the secret.