As you get older, your mind gets a little more set. And it needs the poking and prodding and breaking through of stereotypes that I think young people provide.

If you look at how I've tried to and how I'll continue to try to govern, I'm not driven by some ideological agenda. I'm a pretty practical guy and I just want to make sure that things work.

You wouldn't know that if you talked to Human Rights Watch or Amnesty International or some of the international activist organizations. Certainly you wouldn't know that if you were talking to some of the writers who criticize our drone policy. But I've actually told my staff it's probably good that they stay critical of this policy, even though I think right now we're doing the best that we can in a dangerous world with terrorists who would gladly blow up a school bus full of American kids if they could.

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.

Global warming is not just the greatest environmental challenge facing our planet - it is one of our greatest challenges of any kind.

If you don't have a record to run on, you paint your opponent as someone to run from.

The thing that has disturbed me most about the Russian hacking episode is - and the thing that surprised me most has not been the fact of Russian hacking. The cyber world is full of information gathering, you know, propaganda, et cetera. I have been concerned about the degree to which, in some circles, you've seen people suggest that Vladimir Putin has more credibility than the U.S. government. I think that's something new.