We are a people of improbable hope.

Reversing structural problems in our economy that have been building up for two decades, that was gonna take time. It was gonna take more than a year. It was gonna take more than two years. It was gonna take more than one term. Probably takes more than one president.

I'd like to think that "President Obama believed deeply in this democracy and the American people."

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.

The people there, the community, the lessons that I learned -- they're all based right in this few square miles where we'll now be able to give something back and bring the world back home after this incredible journey.

Internationally, I have obviously been deeply concerned about how we fight the terrorist threat.

For the sake of our children and our future, we must do more to combat climate change.