I'm a capitalist. I believe in capitalism. But capitalism only works if you have safety nets to deal with people who are naturally left behind and brutalized by it.

I am being very humble about the Arab Spring. There's kind of a competition out there, you might have noticed, of who can be the first to say the Arab Spring is going to fail. Everyone says, "I told you so, I told you so about the Muslim Brotherhood." I have no desire to tell anyone anything. I don't know. I'm just listening, watching. It may turn out all these people are right, they may be wrong. They may be right this year and wrong next year, by the way. I'm just trying to listen day to day, figure it out.

Remember, the difference between the world frozen over, in an ice ball, and the warming period we're in now is just 6 degrees centigrade. A change of just 1 degree can have a huge effect.

A 2011 report produced by Forrester Research estimated that the revenue generated through the sales of smartphone and tablet applications will reach $38 billion annually by 2015. Think about that: An industry that did not exist in 2006 will be generating $38 billion in revenues within a decade. . . .

I am hoping, though, that many of them have kids, who, when they have a moment to take a break from their iPods, Internet, or Google, will explain to their parents running the country just how the world is being flattened.

I'm from Minnesota. I'm optimistic. I mean, that's just who I am.

If you don't have an ethic of conservation, you basically have a license to drive a Hummer through the Amazon.