Although my years at Irvine were very productive, I missed not doing experiments myself because of the many responsibilities associated with a faculty position: teaching courses, supervising graduate students, meetings, etc. After spending seven years at Irvine as Assistant and then Associate Professor, I decided to move to a non-academic position. I joined the Molecular Physics and Chemistry Section at the Jet Propulsion Laboratory in 1982. I had a smaller group – only a few postdoctoral fellows – but I also had the luxury of conducting experiments with my own hands, which I enjoyed very much.

On the best days, I stop pleading, stop bargaining and watch-checking and fall into a rhythm so satisfying that I simply forget I’m working. So much of my writing day feels like well-digging. Sometimes I dig 200ft down before coming back up, dry. Every day I search for water.

When another baby arrived, I realized that the problem could not be solved in the operating room, but that we had to combat the root causes of these atrocities. I decided to travel to the village of Kavumu to talk to the men: why don't you protect your babies, your daughters, your wives? And where are the authorities?

It looked like an agricultural frame, something you might grow peas up – a lot of wires and cables strung from posts over a space the size of 57 tennis courts. It was actually built to study radio emission from quasars. I built the prototype and then six of us took two years to build the real thing.

But the thing I think that thrust me possibly into the public consciousness, I had just been elected Bishop of Lesotho. I had gone there to become bishop and I went for a retreat. I don’t know — I mean, I don’t know what happened but it just seemed like God was saying to me, “You’ve got to write a letter to the Prime Minister.” And the letter wrote itself.

There will always be so many who might say, “Ah, he’s a politician masquerading as an archbishop.” Politics is so all-pervasive, and in my theology, obviously, all of life belongs to God, and you don’t have compartments, this is your economic life, this is your political life, this is your religious life. Religion encompasses all of those. But yes, I wouldn’t myself have said I was setting out to be a political animal.

Well, when in 1994 he was elected and I was given the privilege of introducing him to South Africa as our new president and to the world, I sort of whispered to God and said, “God, I don’t really mind now. I mean, if I die now, it would be almost the perfect moment.

It is that you know that you are standing out in this crowd because you are being carried on the shoulders of others. You know, you may have the capacity to articulate their aspirations. That is maybe something special you might have. But what is a leader without followers? I mean you would have all of these interviews and people will not — would not necessarily want to follow. No, I am a great believer in the fact that everything is corporate. Everything is corporate and you — as a leader you are one who can coax the best out of others.

But one of the things that my father did was to let me read comics. Now people used to say that’s bad because it isn’t — it spoils your English but, in fact, letting me read — I devoured all kinds of comics — fed my love for English and my love for reading but I suppose if he had been firm I might not have developed this deep love for reading and for English, which stood me in good stead when I later went into hospital for 20 months. I did have something to do. I had — as things maybe got a little bit more serious, I was given a diet — we didn’t have too many books but my father was keen that one read things like Aesop’s Fables and Lamb’s, Tales from Shakespeare . I didn’t read the originals but I read these stories that describe what Shakespeare was saying in the plays and that possibly was something that sharpened your appetite for later.

I recall when I was about nine picking up a tattered copy of Ebony magazine and I think — I mean, maybe journalists ought to know just how much power they actually have because here I was 10,000 miles away from America with this copy of Ebony magazine and it was describing the exploits of Jackie Robinson and how he broke into major league baseball. Now I didn’t know baseball from ping pong but what was so important for me, what made me grow inches was to know that a black guy had triumphed over all of the obstacles that were placed in his way and there he was now playing for something called Brooklyn Dodgers. Now I didn’t know Brooklyn Dodgers. I didn’t know Jackie, but it helped to exorcise what is the most awful consequence of racial injustice and it is the sense — this demon of self-hate when you have a very low self-esteem.