We've been a country that's been fortunate to be protected by two oceans, to not have serious attacks on our territory for most of our history. And we were unfortunately reminded in a very devastating way of our vulnerability.

Leading in a complex world means recognizing the simple things you can do to make things better.

Every good leader is part manager and every good manager is part leader.

The PDB (Bin Laden Determined to Strike in U.S.) does not say the United States is going to be attacked. It says Bin Laden would like to attack the United States. I don't think you, frankly, had to have that report to know that Bin Laden would like to attack the United States.

I don't think that anybody could have predicted that these people would take an airplane and slam it into the World Trade Center, take another one and slam it into the Pentagon, that they would try to use an airplane as a missile.

The United States government does not authorise or condone torture of detainees. Torture, and conspiracy to commit torture, are crimes under US law, wherever they may occur in the world.

Power is nothing unless you can turn it into influence.