Boredom has always been a problem.

I think I mainly climb mountains because I get a great deal of enjoyment out of it. I never attempt to analyze these things too thoroughly, but I think that all mountaineers do get a great deal of satisfaction out of overcoming some challenge which they think is very difficult for them, or which perhaps may be a little dangerous.

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

I was incredibly stubborn. I mean, I believe that my father was frequently in the right, but I would never admit it, and so we did have a few set-tos on various topics; but on the whole as I got older and my father got more mature we got along reasonably well.

I always refused to give in if there was some argument with my father. Whether it was true or not, I refused to admit it and so often I would - well, tell lies, perhaps. I would either do that or change the story. Particularly if I felt that my father was being unjust, then I was very strongly motivated to not accept his ruling.

I think my strengths perhaps are that I'm determined. I may not be the best climber in the world, but I do like to sort of succeed and so that tends to drive me on, as it were, and I don't give up too easily.

Nobody climbs mountains for scientific reasons. Science is used to raise money for the expeditions, but you really climb for the hell of it.