One of the things that we have to change in this country is the idea that people can't disagree without challenging each other's character and patriotism. I have never suggested that Sen. McCain picks his positions on national security based on politics or personal ambition. I have not suggested it because I believe that he genuinely wants to serve America's national interest. Now, it's time for him to acknowledge that I want to do the same. Let me be clear: I will let no one question my love of this country.

One of the things that I've learned, and I think we've all learned, is that we are not going to get the kind of decisive, permanent victories in this fight against terrorism that we would get from fighting another country. We're not going to get that MacArthur/Emperor moment, because by definition, even after decimating Al Qaeda in the Fata, even after taking out [Osama] bin Laden there's still people there who have both the interest and the capacity if we don't maintain vigilance to strike against the United States.

You know, there are certain things that make for good sound bites but don't always translate into good policy.

The law is a powerful thing but the law doesn't always change what's in people's hearts. And so all of us have an obligation to think about how we're treating other people.

What I believe unites the people of this nation, regardless of race or region or party, young or old, rich or poor, is the simple, profound belief in opportunity for all - the notion that if you work hard and take responsibility, you can get ahead.

While the future is unknowable, the winds always blow in the direction of human progress.

We know that every father has a personal responsibility to do right by their kids - to encourage them to turn off the video games and pick up a book; to teach them the difference between right and wrong; to show them through our own example the value in treating one another as we wish to be treated. And most of all, to play an active and engaged role in their lives.