In America, we're getting too comfortable with our ability to take kinetic strikes around the world without having enough process to avoid consistently the kinds of civilian casualties that can end up actually hurting us in the war against radicalization.

All I care about is making sure that I leave behind an America that is stronger, more prosperous, more stable, more secure than it was when I came into office and that's going to continue to drive me.

The United States was proud to stand with the people of Germany as this nation and this continent reunited and rebuilt and reached for a better future.

Weapons that were designed for soldiers in war theaters don’t belong on our streets.

As I reflect back on what's worked for me in this [presidential] office it's been that I've gotten people who maybe didn't believe in the process to get engaged. Ironically, I've even gotten the other side that maybe didn't believe in the process to get engaged.

You have to exercise, or at some point you'll just break down.

I think that to the extent that we focus on problems where we can build a moral and a political consensus, then I think that we move the country forward and when we are divided and our politics is focused on dividing, then I think we're less successful, not just from the perspective of the Democratic Party or the Republican Party but from the perspective of the nation as a whole.