With practice and focus, you can extend yourself far more than you ever believed possible.

[Derek] Shackleton was a man who - it's probably arrogant to say it - but he was a little bit like me. He undertook incredible dangers and carried on over the sea and over the ice and all the rest of it. He was a remarkable man.

When I was 50 years old, I actually decided to draw up a list of half a dozen things that I really hadn't done very well, and I was going to make efforts to improve. One of them was skiing, and I really did become a very much better skier.

I had never experienced anything like it before and I don't think I have experienced anything like it since [on Ruapehu]. It was my dreams coming true in a way, and from there on I tended to become more of a doer than a dreamer.

Environmental problems are really social problems anyway. They begin with people as the cause and end with people as the victims

I was a dreamer when I was at high school and even primary school. I used to dream about doing adventurous things.

I'm definitely a Queen supporter. She was great.