There is definitely global warming, and man is definitely contributing to it. Go out to, say, Montana and talk to some pretty conservative people, hunters and fishermen. They know that in the trout stream they fished when they were growing up, the trout are stressed because the water temperature is going up. They know the hunting season has been delayed because the snows are coming later, and therefore the elk aren't coming down from the mountains.

I don't think a monarchy led by 75- and 80-year-old men [Saudi Arabia] in today's modern world is really sustainable.

I firmly believe that the next great breakthrough in bioscience could come from a 15-year-old who downloads the human genome in Egypt.

When people get frustrated, it's when they feel they are living in a context that deprives them of dignity, deprives them of justice and deprives them of the freedom to realize their full potential, and that to me is what the Arab awakening was all about. I think it applied to every country, and so I have been an unmitigated supporter of it.

Why is it Muslims from Pakistan or from Egypt come to America and thrive, and they are frustrated back home? It's about clean government. It's about a rule of law. It's about intellectual property protection. They've got all the talent and energy of anybody else. As new immigrants they may have more of it, so you put them in our system and they become doctors, lawyers, and businessmen and entrepreneurs.

We've given Iraq six months and I don't think things are really working out, so we should probably bring our troops home.

I think that competition will exist even if we discover more oil. We're never going to know how much we have, or how long will it last. You are always going to want to have diversity of supply. I think the Middle East will remain a region of competition, of global competition, fighting for a long time.