The United States does not have a monopoly on crazy people. It's not the only country that has psychosis. And yet we kill each other in these mass shootings at rates that are exponentially higher than anyone else. Well, what's the difference? The difference is that these guys can stack up a bunch of ammunition in their houses, and that's sort of par for the course.

Look, first of all, the climate is changing. I don't think the science is clear what percentage is man-made and what percentage is natural. It's convoluted. And for the people to say the science is decided on, this is just really arrogant, to be honest with you, it's this intellectual arrogance that now you can't even have a conversation about it. The climate is changing, and we need to adapt to that reality.

For Democrats who are feeling completely discouraged, I've been trying to remind them, everybody remembers my Boston speech in 2004. They may not remember me showing up here in 2005 when John Kerry had lost a close election, Tom Daschle, the leader of the Senate, had been beaten in an upset. Ken Salazar and I were the only two Democrats that won nationally. Republicans controlled the Senate and the House, and two years later, Democrats were winning back Congress, and four years later I was President of the United States.

A mother deserves a day off to care for a sick child or sick parent without running into hardship - and you know what, a father does, too. It's time to do away with workplace policies that belong in a 'Mad Men' episode.

Peace depends upon compromise among peoples who must live together long after our speeches are over, long after our votes have been tallied.

They assert that their program is purely peaceful. . . . We want them to demonstrate clearly in the actions they propose that they have truly abandoned any nuclear weapons ambition.

Because as tough as things have been, I am convinced you are tougher. I've seen your passion and I've seen your service... I've seen a generation eager, impatient even, to step into the rushing waters of history and change its course.