America, we weaken our ties when we allow our political dialogue to become so corrosive that people of good character aren't even willing to enter into public service; so coarse with rancor that Americans with whom we disagree are seen not just as misguided but as malevolent. We weaken those ties when we define some of us as more American than others, when we write off the whole system as inevitably corrupt, and when we sit back and blame the leaders we elect without examining our own role in electing them.

You mention the Navy, for example, and the fact that we have fewer ships than we did in 1916. Well governor, we also have fewer horses and bayonets.

America remains the one indispensable nation. And the world needs a strong America.

The ideas of ancient Greece helped inspire America's founding fathers as they reached for democracy. Our revolutionary ideas helped inspire Greeks as they sought their own freedom.

That sort of lack of awareness on the part of an activist about the constraints of our political system and the constraints on this office, I think, sometimes would leave me to mutter under my breath. Very rarely did I lose it publicly. Yeah, usually I'd just smile.

Well, I think that when you think about the challenges we face, these are challenges that require us to look forward and not backwards. When it comes to the economy I think we have to recognize that we are now in a global economy. And that the measure of our success is: how well are we training our workers? How well are we investing in the new energy economy?

I believe in term limits for presidents because I think that there is no doubt I'm a better president now than I was when I start. I would argue that I am the best president I've ever been over the last year or two. My team is more effective than it's ever been.But what is also true is that number one, this is grueling.