One of the fondest expressions around is that we can't be the world's policeman. But guess who gets called when suddenly someone needs a cop.

I try to be the same person I was yesterday.

Think hard about it: I'm running out of demons. I'm running out of villians. I'm down to Castro and Kim Il Sung.

Perpetual optimism is a force multiplier.

We got rid of a terrible dictator. We gave the Iraqi people an opportunity for a new life under a representative form of government.

I happen to hold a bachelor of science degree in geology... And my greatest contribution to the field of science is that I never entered it.

Treat people kindly. When you are kind to somebody and I don't mean necessarily "buddy-buddy", just show kindness and consideration. Show that people are worthy and you respect them and you are glad they're with you.