Curiosity is a form of humility — acknowledging that you don't know everything. Responding to curiosity allows other people to speak freely. Facts and details matter and inform a deeper and deeper analysis that allows you to continually revise and update your plans. This, of course, also means that you are constantly admitting prior mistakes. You need to shed sacred cows, seek out blind spots and challenge the status quo.

That is true. That one little corner of South Africa, Port Elizabeth and its immediate surroundings, is a region that I know like the back of the hand that holds my pen as I write about it. I can stand on a street corner in Port Elizabeth, look at anybody and put together some sort of biography. I know where they come from, where they’re going. I have a feel of the textures of their life. If I stand on a street corner in New Haven, which is a place I’ve gotten to know as well as any place outside of South Africa, I am still at a total loss to identify the people passing me on that street.

I always have, in my expeditions, people who are academically far cleverer than I am, and even technically, far more competent. So if you want to lead an expedition, in a sense, you’ve got to keep ahead of them. These bright, competent characters you have with you who are marvelous to have on the expedition. And I’ve always found you can do that by, each night, when you go to bed, just let your mind dwell on the likely things that may happen next day, and think out carefully the sort of decisions that might be necessary to make in order to have the program carried through. So next day, when something happens, you’re the one that’s thought about it and you’re the one who has the ideas.

I have followed that advice - with, I confess, occasional lapses not only at home, but in the places I have worked, even in relating to my colleagues at the Supreme Court. It is important to be a good listener if you are to work with others effectively, but it also pays, sometimes, to be a little deaf - for example, in my current position, when a colleague, academic commentator, or journalist writes that an opinion on which I labored endless hours, worrying over every word, is "sloppy," "smug," "strange," or "profoundly misguided." I am making none of those up.

Only the disciplined ones are free in life. If you are undisciplined, you are a slave to your moods. You are a slave to your passions.

Our life here is simple, very simple. Get up in the morning, go for a run, come back. If it is a day for cleaning, we do the cleaning, or we just relax. Then go for lunch, massage, the 4 o'clock run, evening tea, relax, go to sleep. As simple as that.

When you become a boss, you don't think straight. It's better to be a leader than a boss. That is why I do my share of the cleaning. That is how to show the way to young people. I am trusting that I am leading them in a good way.

You run, eat, sleep, walk around - that's how life is. You don't get complicated. The moment you get complicated it distracts your mind.