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.

Here at home, we will strengthen our defenses but not succumb to a siege mentality that sacrifices the open society and liberties and values that we cherish as Americans, because great and proud nations don't hunker down and hide behind walls of suspicion and mistrust.

We have greater awareness of where we're falling short than we used to. Just take the example of community police relations.

I am a strong believer in the free market. I am a strong believer in capitalism. But, I am also a strong believer that there are certain common goods - our air, our water, making sure that people are safe - that require to have some regulation.

Senator Joe Biden is pretty clean and articulate for a white guy.

Because as tough as things have been, I am convinced you are tougher. I've seen your passion and I've seen your service... I've seen a generation eager, impatient even, to step into the rushing waters of history and change its course.

Now, anybody who thinks that we can move this economy forward with just a few folks at the top doing well, hoping that it's going to trickle down to working people who are running faster and faster just to keep up, you'll never see it.