The dollar is the reserve currency of the world.

In America, there's a failure to appreciate Europe's leading role in the world. Instead of celebrating your dynamic union and seeking to partner with you to meet common challenges, there have been times where America has shown arrogance and been dismissive, even derisive.

Robin Williams was an airman, a doctor, a genie, a nanny ... and everything in between. But he was one of a kind.

A nation cannot prosper long when it favors only the prosperous.

One of the things you learn as president is, as powerful as this office is, you have limited bandwidth. And the time goes by really quickly and you're constantly making choices, and there are pressures on you from all different directions - pressures on your attention, not just pressures from different constituencies. And so you have to be pretty focused about where can you have the biggest, quickest impact.

In many ways [those middle-aged black ladies] my touchstone, because they are what I meant when I talked about the audacity of hope.

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