I believe that without Watergate we would have had an extraordinary period of success with a strong Nixon and a still vital Brezhnev in power.

The nuclear weapons were not useful for the achievement of political objectives.

In the hands of a determined Secretary, the Foreign Service can be a splendid instrument, staffed by knowledgeable, discreet, and energetic individuals. They do require constant vigilance lest the convictions that led them into a penurious career tempt them to preempt decision-making.

We have three things in common: Irish wives, the ability to speak for 17 minutes without a verb, and the fact that we both speak with an accent.

From a geo-strategic point of view, I consider Iran a bigger problem than the Islamic State. ISIS is a group of adventurers with a very aggressive ideology. But they have to conquer more and more territory before they can became a geo-strategic, permanent reality. I think a conflict with ISIS - important as it is - is more manageable than a confrontation with Iran.

The conventional army loses if it does not win. The guerrilla wins if he does not lose.

I have said there are three principles that should be followed. One, we should maintain the "one China" policy that every American president has articulated, including President Reagan. Secondly, we should make clear that we want a peaceful resolution. And three, Taiwan should not challenge that arrangement in a way that will provoke a conflict. Those are three perfectly clear principles. I haven't used any of the other slogans.