Being a scientist is about resilience because science is exploring the unknown, just as an immigrant is exploring the unknown. In both, you are on an uncertain journey and you have to find your own North Star.

The look of the thing is one thing. The sound of it is more important. … When you write a play, it makes a certain kind of noise in your head, and for me rehearsals are largely a process of trying to reproduce that noise. It is not always wise to reproduce it in every instance, but that’s another question.

I just like to get to the start line knowing there was nothing else I could have done, that there wasn't a single session I didn't give 100 per cent. The physical certainty means you can relax mentally and let the performance come.

But I couldn’t let myself feel that way until it was all right to. And that’s part of the surgical mind too, addressing what you need to, and you know you can do, and postponing how you feel about it, thinking only of the patient and what you need to do.

I think it was a combination of feeling and judgment. I happened to be that sort of person that enjoyed making out plans, but I also enjoy changing plans. On an expedition, although I may start out with a detailed plan, I’m prepared to change it at any moment and completely redo it. So our expeditions turned out to be very adaptable ones. We achieved the final objectives just the same as many other expeditions, but maybe we had more fun in the process because it seemed something we could vary. We still carried on to achieve our major objectives.

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.

I still regard adventure pretty much as a hobby to tell you the honest truth, and I think this approach to it keeps one refreshed almost. I think if you just regard adventure as a business, working becomes very boring as many other businesses can become. But even though adventure changed my life considerably, both in what I was doing and even economically, I’ve always regarded myself in a sense as a competent amateur.

I think motivation is the single most important factor in any sort of success. Physical fitness is important, technical skill is important, and maybe even the desire for money is important in some respects. But a sort of basic motivation, the desire to succeed, to stretch yourself to the utmost is the most important factor. Certainly in the field of exploration and activity, it’s the thing that makes the difference between someone who does really well and someone who doesn’t.

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 would advise them to aim high. To set their sights at a pretty tough target and don’t be too worried if you’re not successful at first. Just keep persisting and keep improving your standards, getting better and better and ultimately, you’ve got a pretty fair chance at achieving your desired goal. ... But, I do think that virtually everybody that’s born has the ability to be very competent at doing something. I think that, in itself, is worthy of aiming towards, just to be competent at doing anything you particularly wish to do.