To Barack and Michelle Obama - America owes you an enormous debt of gratitude.

Any chance I get, I will dance.

It was during George W. Bush's presidency that Iran mastered the nuclear fuel cycle, that they built covert facilities, that they stocked them with centrifuges, that they were spinning merrily away toward getting a nuclear-weapons program.

I wanted to work on policy because I think it really makes a difference.

I don't in any way underestimate the difficulties, because it's only gotten harder. But I do think you just have to go into politics with the attitude that you're going to speak clearly and authentically about what you see the country needs...and seek out whatever possible partners you can, even in the other party. I've looked at successful presidents going back. Some of our most successful governed through periods when their party was in charge, and when the other party was in charge. There's no magic formula.

You've got to ask yourself, why won't Donald Trump release his tax returns? I think there may be a couple of reasons. First, maybe he's not as rich as he says he is. Second, maybe he's not as charitable as he claims to be. Third, we don't know all of his business dealings, but we have been told through investigative reporting that he owes about $650 million to Wall Street and foreign banks. Or maybe he doesn't want the American people to know that he's paid nothing in federal taxes.

My view is that, you know, life unfolds at its own rhythm. You know, I have never lived a life that I thought I could plan out. And I'm just trying to do the best I can every day. I find I have a lot to get done between the time I get up and the time I go to bed.