I'm defining [presidential courage] pretty narrowly. It's not only taking a big political risk but it's also the risk that in the hindsight of history, people think it's wise.

The original thing that fascinated me most was why we expect leaders, and especially presidents, at times to destroy themselves - and that's a sign of being a good leader or a good president. We usually don't expect that of almost anyone else in any profession, in particular, in public life.

Legacy is what a president does that affects later generations.

The Founding Fathers would be sorry to see that America had become so divided and factionalized.

To people who remember JFK's assassination, JFK Jr. will probably always be that boy saluting his father's coffin.

As you look back in history, we [the United States] have done wonderful things, the Marshal Plan is the most obvious. After World War II, we spent billions of dollars to rebuild Europe or at least part of Europe after the devastation of World War II. We did it out of charity, but we also did it to keep the Russians from getting deeply into Europe.

We [the United States] are the world's only superpower right now, so everyone notices every bit of what we do or don't do.