What the American Dream means to me is the fact that - what founded this country - when I think about those posters that were put up in Europe, which said, "Come to America and you'll have golden sidewalks. The land will be yours." There was something so inspirational about the fact that these immigrants from all over the world felt that here was a place of freedom, a place of opportunity.

Go ahead, and fear not. You will have a full library at your service.

I still think about that one Jamiroquai video a lot.

Where's the progress that we're going to see in Afghanistan? You have to keep public support both on the economy and the war or these things will really become troubling.

He (William Howard Taft) had little patience with the unconscious arrogance of conscious wealth and financial success.

When you are an historian, there's probably nothing that matters more than to be recognized by your colleagues in your own profession. I was lucky enough to win the Pulitzer Prize for History. I had to give a talk right after that to some young people. The most important thing to tell them, I think, is that you can't ever know that it's going to turn out that way.

I think after Sandy Hook, when Obama went out, and he talked a lot about gun control and met with the parents, there was a sense that something was going to happen. But then, I guess, the power of special interests was greater than public sentiment.