Success looks like you sitting here pretty confident that an armed brigade isn't going to come pouring in here and blow your head off. Which I don't think is your major concern. Therefore, the United States' foreign policy is successful.

Italy is the fourth-largest economy in Europe and the eighth-largest economy in the world, and its banking system is collapsing. And Germany is desperate. It must maintain its standard of living. It can only do that with exports and Deutsche Bank is very exposed to Italian debt. But so is the rest of Europe.

Constraint theory asks: What is the price for doing this? Now one way around constraint theory is declaring your enemy crazy. Crazy and stupid are not concepts used in forecasting. When people say they're really stupid or they're crazy, that's laziness. That means I don't want to think through their position or about what they're really going to do.

The British bombed German cities [during World War II] to keep the workers awake at night. So instead of dropping one bomb, we sent a thousand planes and, yes, we took out the factory sometimes, but we also took out the city. It reached the point where we wanted more efficient ways to destroy a city. The result was nuclear weapons.

The tragedy of the human condition is that the thing that makes us most human - community - originates in the inhumanity of war.

The most horrible sort of war is civil war.

Politicians are enormously smart and rational. They don't have the same interests as businessmen ... But a man rises to the top of the United States. He's clawed his way out of 330 million people. OK. He didn't do that because he was dumb, or lucky, or something like that. He understands power. And he understands how to take it. And he understands how to keep it.