I would have I think made a bigger mistake if I had said, "Eh, chemical weapons. That doesn't really change my calculus." I think it was important for me as president of the United States to send a message that in fact there is something different about chemical weapons [in Syria].

One of the great things about being commander in chief is getting to know our men and women in uniform in a very intimate way, whether it's visiting Walter Reed and seeing our wounded soldiers, or being on a base and talking to families, or interacting with them on missions. They're the best of the best: always thinking about the mission, not thinking about credit, not thinking about who's up front.

I've been very good for gun manufacturers.

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.

But something stirred across the country because of what happened in Selma, Alabama, because some folks were willing to march across a bridge. And so they [my parents] got together, Barack Obama Jr. was born. So don't tell me I don't have a claim on Selma, Alabama. Don't tell me I'm not coming home when I come to Selma, Alabama.

Around the world, Gandhi, Nelson Mandela -- what they did was hard. It takes time. It takes more than a single term. It takes more than a single president. It takes more than a single individual.

One of the interesting things about being in public life is there are constantly these pressures being placed on you from different sides. To be effective, you have to be able to listen to a variety of points of view, synthesize viewpoints.