The World War II generation believed the United States could do anything - anything... And Vietnam was a shattering experience for everyone.

World War I was not inevitable, as many historians say. It could have been avoided, and it was a diplomatically botched negotiation.

Our enemy is Al Qaeda and its allies, people who have publicly said they wish to attack the United States again, people who have publicly called on nuclear physicists and engineers to help them gain access to nuclear weapons, which, as the whole world knows, Pakistan has.

A peace deal requires agreements, and you don't make agreements with your friends, you make agreements with your enemies.

It's an improvisation on a theme. You know where you want to go, but you don't know how to get there. It's not linear.

If a country denies it has AIDS, that country will inevitably become an even greater victim.

Bureaucracies have a natural tendency not to cooperate, coordinate or consolidate with each other. They won't cooperate with each other - unless they are forced to do so by political level authority.