While the future is unknowable, the winds always blow in the direction of human progress.

We forget now, but during his life, Dr. King wasn't always considered a unifying figure. Even after rising to prominence, even after winning the Nobel Peace Prize, Dr. King was vilified by many, denounced as a rabble rouser and an agitator, a communist and a radical. He was even attacked by his own people, by those who felt he was going too fast or those who felt he was going too slow; by those who felt he shouldn't meddle in issues like the Vietnam War or the rights of union workers.

We are greater than the sum of our individual ambitions

There's a reason why the NRA's not here. They're just down the street. And since this is the main reason they exist, you'd think that they'd be prepared to have a debate with a president.

And terrorists who seek to harm our citizens will feel the long arm of American justice.

If we want America to stay on the cutting edge, we need young Americans to master the tools and technology that will change the way we do just about everything.

Nobody wants to put the creditworthiness of the United States in jeopardy. Nobody wants to see the United States default. So we've got to seize this moment, and we have to seize it soon.