I think that at a certain stage those early ambitions burn away, partly because you achieve something, you get something done, you get some notoriety. And then the particularities of who you are and what your deepest commitments are begin expressing themselves. You're not just chasing the idea of "me" being important, but you, rather, are chasing a particular passion.

I don't think that there's a hard-and-fast deadline. . . .What we have said all along is that this is not an open-ended process, we are not in this just to talk for talk's sake. . . . We expect prompt, concrete steps to be taken over the next couple of weeks.

We are not going to keep the window open forever.

In a world of complex threats, our security and leadership depends on all elements of our power - including strong and principled diplomacy.

n case you missed it, this week, there was a tragedy in Kansas. Ten thousand people died - an entire town destroyed.

For me, personally, the most difficult moments had to do with not just terrorist attacks, but also shootings.

We've got to be able to have a conversation and recognize we're all Americans; we all want the best for this country. We may have some disagreements in terms of how to get there, but all of us want to make sure that our economy is strong, that jobs are growing. All of us want to make sure that people aren't bankrupt when they get sick. All of us want to make sure that young people can afford an education.