I would meet directly with the leadership in Iran.

You [as a president] have to have a strong team around you. You have to have respect for institutions and the process to make good decisions because you are inherently reliant on other folks.

Too often, we have failed to enforce international norms when it's inconvenient to do so.

ISIL is a terrorist organization, pure and simple. And it has no vision other than the slaughter of all who stand in its way.

Nobody's cooler than my two girls. They just seem to take whatever comes with, you know - happiness and - steadiness. And they're loving school. They're making friends... and - they've already joined some clubs. And Sasha, you know - I think maybe to endear - myself to her, she - she decided she wanted to join a basketball team. So - what more could I want?

It betrays a poverty of ambition if all you think about is what goods you can buy instead of what good you can do.

People are less certain of their national identities or their place in the world. It starts looking different and disorienting. And there is no doubt that that has produced populist movements both from the left and from the right in many countries in Europe.