We're America, and we have to stop worrying about what happens overseas, and to be optimistic, even though nobody should think we're not going to have some difficult times.

There are lots of threats to you in the world. There's the threat of a heart attack for genetic reasons. You can't sit there and worry about everything. Get a life.

Stubborn isn't a word I would use to describe myself; pigheaded is more appropriate.

I don't know why you should be proud of something. It doesn't make you any better or worse. You are what you are.

Fighting climate change isn't just an obligation we owe to future generations. It's also an opportunity to improve public health - and drive economic growth - in the here and now.

What goes on in Europe concerns us greatly because, if Europe comes apart, the E.U. comes apart, then you're going to have enormous impact on America, that's a very big trading partner of ours, and people own securities around the world in this day and age.

The governor of Texas was a real climate change, well, "skeptic" would be a nice way of phrasing it. Still, though, Texas is a leader in renewables. So, what I care about is what politicians are actually doing, not what they are saying.