90 percent of my time is spent on 10 percent of the world.

Poverty arises and persists where corruption is endemic and enterprise is stifled, where basic fairness provided by the rule of law is absent. In such circumstances, poverty is an assault against human dignity, and in that assault lies the natural seed of human anger

When you decide to get involved in a military operation in a place like Syria, you've got to be prepared, as we learned from Iraq and Afghanistan, to become the government, and I'm not sure any country, either the United States or I don't hear of anyone else, who's willing to take on that responsibility.

I try to be the same person I was yesterday.

Another rule I have is: Don't let your ego get tied up in a policy dispute. Otherwise, if things don't go your way, you can end up breaking a relationship with somebody with whom you can't afford to break.

Experts often possess more data than judgment.

Whenever you start-give it your best. The opportunities are there to be anything you want to be. But wanting to be someone isn't enough; dreaming about it isn't enough; thinking about it isn't enough. You've got to study for it, work for it, fight for it with all your heart and soul, because nobody is going to hand it to you.