There are problems that just end up being really hard and by definition the only problems that come to my desk are the ones that nobody else can solve.

We reward people a lot for being rich, for being famous, for being cute, for being thin... one of the values I think we need to instill in our country, in our children, is a sense of 'usefulness', in other words, are we useful, are we making other peoples' lives a little bit better?

You're likable enough, Hillary.

The President does not have power under the Constitution to unilaterally authorize a military attack in a situation that does not involve stopping an actual or imminent threat to the nation.

We can't, you know, use our military to make sure the planet doesn't get warmer. And so that kind of leadership, of being able to bring people together, to apply practical commonsense solutions based on facts, based on science, based on what works you know, that's been the approach I have taken consistently as a public servant. That's the kind of style that I think we need in the presidency right now.

No challenge poses a greater threat to future generations than climate change.

There are people in Iran who have the same aspirations as people all around the world for a better life.