Divorce is one of the key predictors of poverty for a child growing up in a home that's broken.

I support workplace clean air. But a federal ban on smoking would mean that you couldn't smoke in your own home. I don't care what people do in their home.

So when we're really addressing issues like poverty, you can't do that without addressing the real driver of some of those, which is stable homes, families. So that's why to me those issues are important. They're not frivolous. They're critical economic issues.

I've had the privilege of working with Bono for the past few years in the One Campaign to fight AIDS and hunger and disease around the world. Bono is an Irishman and a great humanitarian. And I remember him telling me of his admiration for America.

Democracy is not what we don't want. Democracy is what we do want. It is a set of affirmative values by which we can move forward. If we cannot insert our values into our vote, and our vote is simply against what we fear most, then we are a ship lost at sea.

If you get the government off our back, there's no economy in the world that can create more jobs in the long-term for everybody.

Ten years ago, we were seen as a virtually failed state, but today we are a vibrant democracy. You can walk safely through the streets of Bogota these days.

Any time scientists disagree, it's because we have insufficient data. Then we can agree on what kind of data to get; we get the data; and the data solves the problem. Either I'm right, or you're right, or we're both wrong. And we move on. That kind of conflict resolution does not exist in politics or religion.