I think science is real.

Nine million people - nine million people lost their jobs [in 2008]. Five million people lost their homes. And $13 trillion in family wealth was wiped out.Now, we have come back from that abyss. And it has not been easy.

What Secretary Ash Carter is looking at is the constant pressure that Russia's putting on our European allies. The way that Russia is trying to move the boundaries of the post-World War II Europe. The way that he is trying to set European countries against one another, seizing territory, holding it in Crimea. Beginning to explore whether they could make some inroads in the Baltics.

Part of diplomacy, the hard work of diplomacy is trying to extract whatever concessions you can get, and giving something the other side wants. Of course you've got to try to make peace with, and work with those who are your adversaries, but you don't just rush in, open the door, and say, "Here I am. Let's talk and make a deal."

The most important thing I have to say to you today is that hair matters. Your hair will send significant messages to those around you: what hopes and dreams you have for the world, but more, what hopes and dreams you have for your hair. Pay attention to your hair, because everyone else will.

The present system is unsustainable. The only question is whether we will master the change or it will master us.

I have gone from a Barry Goldwater Republican to a New Democrat, but I think my underlying values have remained pretty constant; individual responsibility and community. I do not see those as being mutually inconsistent.