I've often thought about that and the only suitable member to join me on that climb [to Everest] was George Lowe: he was strong, a good man on a mountain, with a great sense of humour, and I liked that. I think George and I could've done that together ... I've probably never told George that.

I always, I would say, make sure that in my presentation I'll have what I want to do. I try and make it so interesting to my companions that they want to go, too. I don't have to twist any arms or make - you know - any great challenges available.

Challenge is what makes men. It will be the end when men stop looking for new challenges.

People do not decide to become extraordinary. They decide to accomplish extraordinary things.

Becoming a 'Sir' is slightly uncomfortable at first, although it is a considerable honor. It is amazing how quickly you become accustomed to it.

There are lots and lots of challenges that I wished - at the time - that I had done.There are lots of occasions where there were exciting things to be done but for some reason or another it was physically impossible for us to do them. I still wouldn't mind if I was able to go down into this most impressive valley in the Antarctic, but of course those things are beyond me now.

I'm a very, very modest person and with limited abilities. I do have the wish to succeed in anything I undertake, and that does help out, but, in general, there are so many other people who are skilled in their field that I feel very ordinary.