When you see a Donald Trump and a Bernie Sanders, very unconventional candidates, have considerable success, then obviously there's something there that's being tapped into; a suspicion on globalization, a desire to reign in it's excesses, a suspicion of elites and governing institutions that people feel may not be responsive to their immediate needs. And that sometimes gets wrapped up in issues of ethnic identify or religious identity or cultural identity, and that can be a volatile mix.

I always tell my staff, "Better is good." I'll take better every time, because better is hard.

Some may still deny the overwhelming judgment of science, but none can avoid the devastating impact of raging fires, and crippling drought, and more powerful storms.

When we were working on immigration reform and there was a young Latino man, young immigration activist here who, in the Roosevelt Room, refused to shake my hand.He made a point of saying, "I can't shake your hand; you're deporting too many people." And I just said to him, "Young man, I'm glad that you feel so passionately about this issue, but you're with the president right now in the White House. You've got to think about what's going to be most effective in getting what you need, what you're trying to accomplish. Because this may not be your best strategy."

When I came into office, the world was divided. Iran was resurgent. Iran is at its weakest point, economically, strategically, militarily, then since - then in many years. And we are going to continue to keep the pressure on to make sure that they do not get a nuclear weapon. That's in America's national interest and that will be the case so long as I'm president.

Iran has to live up to its international obligations. . . . The president has said that our patience is not unlimited.

Libraries have a special role to play in our knowledge economy. Your institutions have been and should be a place where parents and children come to read together and learn together. We should take our kids there more.