I have to separate my personal concerns from my professional responsibilities.

People are consuming the news that is comfortable for them, not necessarily the news that is real or that they need to know.

Progress is the product of human agency. Things get better because we make them better. Things go wrong when we get too comfortable, when we fail to take risks or seize opportunities.

President Obama is an extraordinary person to work with and for.

Peace, prosperity, and democracy cannot endure if imposed from the outside. We should cease to make false distinctions between peacekeeping and prevention; they are in fact inextricably linked.

I think it's very, very important that in foreign policy and national security decision making, as in any other realm, that there be a range of diversity that reflects the full complexity of America. We should draw on those experiences to inform our decision making.

The notion that -- which some people are trying to suggest, that by asking for the identity of an American person, that is the same as leaking it, is completely false. There's no equivalence between so-called unmasking and leaking.