High office teaches decision making, not substance. It consumes intellectual capital; it does not create it. Most high officials leave office with the perceptions and insights with which they entered; they learn how to make decisions but not what decisions to make.

Everybody has a hacking capability. And probably every intelligence service is hacking in the territory of other countries. But who exactly does what? That would be a very sensitive piece of information. But it's very difficult to communicate about it. Because nobody wants to admit the scope of what they're doing.

Diplomacy: the art of restraining power.

For other nations, utopia is a blessed past never to be recovered; for Americans it is just beyond the horizon.

I went to Pakistan; I engaged in peace. If a hand extended is not shaken, what are you supposed to do?

I believe - though I may be wrong, because I'm no expert - that this war is about what most wars are about: hegemony, money, power and oil.

If civilization is to survive, we must cultivate the science of human relationships - the ability of all peoples, of all kinds, to live together, in the same world at peace.

In the Middle East, it is clear that peace will never be reached without solving the Israeli-Palestinian conflict. A two-state solution must be found and enforced.