We are not going to keep the window open forever.

My presidency is not over. I've got another five years coming up.

If I'm president, some day, young kids will look at the world differently. They will say, I could be president some day. They couldn't have said that before I came along. The world will see the United States in a different context, as a country of true opportunity for all.

The friendship that we established early on in our marriage ... that carries you through tough times. That and a good sense of humor.

Now, at times this issue has tended to degenerate into an 'either-or' type of debate. Either we protect our people from terror or we protect our most cherished principles. But that is a false choice. It asks too little of us and assumes too little about America.

The best way to not feel hopeless is to get up and do something.

My hope would be that, as we're moving through the world right now, we're able to get that psychological or emotional peace by seeing very concretely our kids doing better and being more hopeful and having greater opportunities.