I don't want to get into an insult fight with Donald Trump.

Racial inequality is a big problem.

I've spent 30 years, actually maybe a little more, working to help kids and families. And I want to take all that experience to the White House and do that every single day.

I think that you can disagree with people and debate over their positions with issues without engaging in the politics of personal destruction.

A vote in 2002 is not a plan to defeat ISIS.

A lot of the people in history who I really admire lived before the hyperinformation age we're living in. Even if they were governing or solving problems in consequential periods, like the Civil War or the world wars or the Great Depression or the Cold War, they had a period of time and space to actually think, to be private and you read their biographies, and they had time to think about what was happening and how to respond. I don't think human nature has changed in the last 50-150 years, but the stresses, the demands on those of us in public life have just exploded.

We acknowledge-now with President Obama-that we have made mistakes in the United States, and we along with other developed countries have contributed most significantly to the problem we face with climate change.