I certainly want to continue trying to understand how the global environment functions. The earth as a system is a very complicated one. And to understand it, we need very many disciplines, very many different scientists working together. I want to continue working with my specialty, which is chemistry, with the atmosphere. There is still much to learn about chemical reactions that occur out there in the air, in the atmosphere. So one of my projects now is to really learn more about this pollution that occurs in cities and that is spreading more through the globe. To learn it in enough detail so we can better tackle it, we can better come up with new ways of using energy, for example, that are not so damaging to the environment.

The mystery of summoning up words. Where are they in the mind, in the brain? They appear to be an agency from nowhere. They exist somewhere in our ground or in our air. They come from unknown darkness. From a place we normally don't think about.

So a great deal has changed, but we in the Truth and Reconciliation Commission said, “Watch it. You can kiss reconciliation and forgiveness goodbye, unless the gap between the rich and the poor — the haves and the have-nots — is narrowed, and narrowed quickly and dramatically.” So yes, we face very, very considerable problems.

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.

I think it’s more modeling. I never bring in my children and say, “Listen, these are the values you should follow in life.” I think it’s a modeling by my wife and me. I think we give them a good life. They saw how we go through life: a difficult time, a hard time, good time. I am very happy. I think they are good kids. If I have hope, it’s because I look at my children.

Unfortunately, I don’t. My wife now reads fiction. I don’t have the time to read fiction. My wife reads the fiction and summarizes it to me, but I wish at one point I’ll have time again to read fiction. It is a luxury I cannot afford right now.

My sister-in-law and I are working towards the same goal, through different paths: the security of the human family.

No. Unfortunately, it hasn’t worked out quite that way. At that time, everybody was euphoric that we will have a new world order, you know, a world order that does not rely on nuclear weapons, nuclear deterrence. Unfortunately, it didn’t work that way. ... We still have thousands of warheads in existence. We still have more than 20 — 30 countries relying on nuclear deterrence for their own survival.

For them, home is the world. For them, every human being is just one member of that large human family you have. ... if we have more children like mine, in my view, we will not have war.

Unfortunately, in the case of Iraq, I believe we could have done that through an inspection process. I was calling for a few months more to complete our work. We hadn’t seen indications of weapons of mass destruction. We hadn’t seen indications of nuclear weapons. ... Unfortunately, it didn’t work that way. There was faulty intelligence. There were lots of other considerations that made a decision to go to war tempting, to get rid of Saddam Hussein.