The study of geography is about more than just memorizing places on a map. It's about understanding the complexity of our world, appreciating the diversity of cultures that exists across continents. And in the end, it's about using all that knowledge to help bridge divides and bring people together.

The journey will be difficult. The road will be long. I face this challenge with profound humility, and knowledge of my own limitations. But I also face it with limitless faith in the capacity of the American people.

Now, some have said I blame too many problems on my predecessor, but let's not forget that's a practice that was initiated by George W. Bush.

We ask our men and women in uniform to leave their families, our guardsmen and reservists to leave their jobs. We ask you to fight, to sacrifice, to risk your lives for your country. The last thing you should have to do is fight for a job when you come home.

There are war-torn countries, people full of poverty, who still voted, 60, 70 percent. If here in the United States of America, we voted at 60 percent, 70 percent, it would transform our politics.

To the extent that our political dialogue is such where everything is under suspicion, everybody is corrupt and everybody is doing things for partisan reasons, and all of our institutions are full of malevolent actors - if that's the storyline that's being put out there by whatever party is out of power, then when a foreign government introduces that same argument with facts that are made up, voters who have been listening to that stuff for years, who have been getting that stuff every day from talk radio or other venues, they're going to believe it.

I began feeling the way I imagine an actor or athlete must feel when, after years of commitment to a particular dream...he realizes that he's gone just about as far as talent or fortune will take him. The dream will not happen, and he now faces the choice of accepting this fact like a grownup and moving on to more sensible pursuits, or refusing the truth and ending up bitter, quarrelsome, and slightly pathetic.