Nothing is more urgent than a serious, dare I say compassionate, debate as to where we are going at home and abroad. Technicians cannot master revolutions; every great achievement was an idea before it became a reality. Cathedrals cannot be built by those who are paralyzed by doubt or consumed by cynicism. If a society loses the capacity for great conception, it can be administered but not governed.

In a diplomatic negotiation, you always meet the same the other side all the time. Even if you should succeed in outsmarting him or in pressuring him, it only sets up a cycle in which he will try to get even.

I don't know what happens in the next years. But I cannot now design a policy in which we try to keep China from developing, because in some years, if they develop, they might be rich enough to challenge us, and adopt the principle that we will hold down any state that might in the future become strong. That would make us a world empire for which we wouldn't have the talents or the convictions.

Diplomats operate through deadlock, which is the way by which two sides can test each other's determination. Even if they have egos for it few heads of government have the time to resolve stalemates, their meetings are too short and the demands of protocol too heavy.

Covert action should not be confused with missionary work.

The idea of abstract power only exists for academics, not in real life.

I know Hillary Clinton as a person. And as a personal friend, I would say yes, she'd be a good president. But she'd put me under a great conflict of interest if she were a candidate because I intend to support the Republicans.