I have always had extraordinarily good relations with very conservative colleagues. And that's not because I agree with any of them or fudge on my positions, but people feel I listen to them and give them the benefit of the doubt. I assume the best of people. And that, I think, is an attitude that is maybe rare in politics.

My biggest frustration so far is the fact that this society has not been willing to take some basic steps to keep guns out of the hands of people who can do just unbelievable damage. We're the only developed country on Earth where this happens. ... And it happens once a week. And it's a one-day story. ... The country has to do some soul-searching on this.

The Greek people have gone through some very difficult times and there's still a hard road ahead, but despite those hardships, Greece has continued to be a reliable ally, has shown true compassion to fellow human beings in need. It's an example of the Greek character.

Don't let your failures define you.

I said to one young activist who herself was the daughter of an undocumented worker, and so could speak from a very personal and legitimate perspective - I remember saying to her: I agree with you, from a moral perspective, that a child from Honduras is worth the same as my daughter. God is not a respecter of boundaries; he's not saying that American kids deserve a better life than Honduran kids. But I'm the president of the United States, and the nation-state by definition means that boundaries mean something and borders mean something.

The only reason I send a single young man or woman in uniform anywhere in the world is because I think it's necessary to keep us safe.

Now we're in the midst of not just advocating for change, not just calling for change - we're doing the grinding, sometimes frustrating work of delivering change - inch by inch, day by day.