My mother was the one constant in my life. When I think about my mom raising me alone when she was 20, and working and paying the bills, and, you know, trying to pursue your own dreams, I think is a feat that is unmatched.

The same would be true for something like Social Security, where historically, if you just read the law and the fact that it excluded domestic workers or agricultural workers, you might not see race in it, unless you knew that that covered a huge chunk of African Americans, particularly in the South.

I'm inspired by the people I meet in my travels--hearing their stories, seeing the hardships they overcome, their fundamental optimism and decency. I'm inspired by the love people have for their children. And I'm inspired by my own children, how full they make my heart. They make me want to work to make the world a little bit better. And they make me want to be a better man.

Too often, we have failed to enforce international norms when it's inconvenient to do so.

One thing you learn in this job [being US President] is that even if something's not your fault, you're still responsible. And that's how it should be.

We made America more respected around the world, took on the mantle of leadership in the fight to protect this planet for our kids, and much, much more.

We do have to balance this issue of privacy and security. Those who pretend that there's no balance that has to be struck and think we can take a 100-percent absolutist approach to protecting privacy don't recognize that governments are going to be under an enormous burden to prevent the kinds of terrorist acts that not only harm individuals, but also can distort our society and our politics in very dangerous ways.