The man who can drive himself further once the effort gets painful is the man who will win.

I trained for less than three-quarters of an hour, maybe five days a week - I didn't have time to do more. But it was all about quality, not quantity - so I didn't waste time jogging, ever.

I couldn't disappoint people. I did not want to fail and exhaust myself, because I was the kind of runner who trained so little that I couldn't race again within another 10 days.

Our concept of a family holiday was going to a guest house in the Lake district or Wales, where walking was part of the holiday.

It is the brain, not the heart or lungs, that is the critical organ.

I wanted to be a neurologist. That seemed to be the most difficult, most intriguing, and the most important aspect of medicine, which had links with psychology, aggression, behavior, and human affairs.

Just because they say it's impossible doesn't mean you can't do it.