Any lasting relationship needs non-negotiables. We made the decision early on never to be apart for longer than two weeks: 26 years married and we’ve only broken that rule once, by 11 hours, when my wife was in Sleepy Hollow. If I ever meet [director] Tim Burton, I’ll be having words.

I don't enjoy it but I know that I have got to live with [myself] if I'm not going to give it 100 per cent. The key thing is getting to the start line and knowing that I couldn't have done any more, that I didn't back off. You accept the pain, because if you didn't there would always be that element of doubt.

But I am not looking to any accounts, and I’m not interested at all how many money I have in the bank, what is costing this or that. I’m only trying to realize my ideas.

Proceed slowly and take care. […] To ensure that you proceed slowly, write by hand.

I think most of our major challenges are not going to be in the physical field at all. I think they’re going to be in the field of human relations, of getting on with each other, of contributing. People accepting that they have to contribute something, their thoughts, their ideas, maybe even their money, towards producing a world society that is perhaps a little bit more honest and reasonable than it is now.

Well my memory for names is absolutely appalling, but I know I did pass through a phase of books like King Solomon’s Mines. H. Rider Haggard was the author, and he wrote these great romantic adventure stories. I used to enjoy Georgette Heyer, in which the hero was usually a rather middle-aged gentleman, a very good sword fighter, with a beautiful young lady and all the rest of it. Great sword fighting and all highly romantic, adventurous activity. I used to find these things quite entertaining. I even passed through a phase when I quite enjoyed Western stories. Nowadays, I find them a little on the naive side but, for a period, I found the Western stories quite entertaining light reading. They are very romanticized, as we all know. Later on, I became much more interested in reading biographies, particularly about people who had made their mark in the community. I still enjoy reading books of that nature.

I did have — definitely — one heroic figure who impressed me very much indeed, and that was the great Antarctic explorer, Shackleton. Shackleton I always admired because he was a tough man and a very good leader. And whenever he was in difficult circumstances, which he frequently was, he seemed to have the great ability to inspire his men and lead his party safely out of those conditions. So certainly Shackleton, I would have said, more than anything, was a role model for me.

Those years from 1953 to 1975 were extremely happy years for me. I did many adventurous activities. I got deeply involved in these aid programs for the people of the Himalayas. I had a nice family, we took our family into the out-of-doors, we camped and we swam and we clambered around the hills. For me, it was a very full and a very happy existence.

Well, then of course, came the disaster in 1975, when my wife and my youngest daughter were flying into the Nepal hills where I was building a hospital and their plane crashed and they were killed. And this certainly, for me, was an absolute disaster, really because the two people that meant most to me in life had been killed in one fell swoop. It did take me quite a number of years to get over it. I found the only way to deal with it was to carry on very energetically, doing the things that we had all been doing together, which was largely building schools and things for the mountain people. Although, people used to say to me, “Time is the great healer,” certainly for the first two years I simply didn’t accept this. But, time was a great healer and after the years passed, the memories still remain. But, I think quite a lot of the pain tends to fade a little bit, and life did become a little bit easier.

I’ve been very fortunate in that respect. In the early days I liked to be the bomb of the expedition, and rush on ahead and do things faster than anybody else. Those days merged very pleasantly into periods when I organized and inspired expeditions and selected these younger people who were then the bombs of the operation. And then it drifted into this involvement with the people of the area, still loving the mountains, but finding the people just as important too. And on and on it’s gone. As I get older and less physically capable, I find other challenges have grown up and become just as important to me.