We seem to have trouble with [critical thinking]. And our political system doesn't help.

We're showing that there's no excuse for other nations to come together, both developed and developing, to achieve a strong global climate agreement next year.

I've been keeping my own naughty and nice list for Washington.

What used to be racial segregation now mirrors itself in class segregation, this great sorting (has) taken place. It creates its own politics. There are some communities where not only do I not know poor people, I don't even know people who have trouble paying the bills at the end of the month. I just don't know those people. And so there's less sense of investment in those children.

When I've sent young men and women into harm's way, I always understand that that is the last resort, not the first resort.

There are a lot of very religious scientists around. I think the problem here is that in our school systems, and to some degree - and this is where it is relevant - with school boards around the country that are mandating curriculums and textbooks, you start seeing this weird watering down of scientific fact so that our kids are growing up in an environment - and this connects to what I was saying earlier abou the media - where everything's contested. Where nothing is true.

Change doesn't come from Washington. Change comes to Washington