Boredom has always been a problem.

When you go to the mountains, you see them and you admire them. In a sense, they give you a challenge, and you try to express that challenge by climbing them.

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.

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 think global warming is a very real problem for our world. I've seen the changes that have taken place in the Antarctic, in the Himalayas, where the natural ice has sort of faded away, and there's no doubt in my mind that we're living in a strange world, a world which is not easy to understand or handle, But there's nothing you can do about, you just have to live your life as best you can.

In those days we were punished very frequently and I felt that it was often unjust, and so I would resist the desire to agree with many, many things. So I used to get beaten quite frequently and I more or less accepted it as part of life.

I think Himalayan climbers tend to mature fairly late. I think most of the successful Himalayan climbers have ranged from 28 to just over 40, really.