Not to get too deep on shaving my mustache, but it was kind of symbolic of, 'This is a moment of liberation, a chance to reinvent yourself.' That's kind of what I did.

You look at the Middle East, you started the Iran deal, that's another beauty where you have a country that was ready to fall, I mean, they were doing so badly. They were choking on the sanctions. And now they're going to be actually probably a major power at some point pretty soon, the way they're going.

The share of Americans who say race relations are bad in this country is the highest it's been in decades, much of it amplified by shootings of African-Americans by police, as we've seen recently in Charlotte and Tulsa. Race has been a big issue in 2016 campaign.

I remember when I interviewed at MSNBC, one of the first things they said to me was, 'In your tapes, you had a mustache, right?' I said, 'Yeah, I recently took it off.' I said, 'If you hire me, you get to decide if you want it or not.' They said, 'No, no, we're fine with it now.'

You have to go where the story is to report on it. As a journalist, you're essentially running to things that other people are running away from.

I am honored to have this role [of the moderator], but this evening belongs to the candidates and, just as important, to the American people.

I don't expect us to cover all the issues of this campaign [2016] tonight, but I remind everyone, there are two more presidential debates scheduled. We are going to focus on many of the issues that voters tell us are most important, and we're going to press for specifics.