I cannot swallow whole the view of Lincoln as the Great Emancipator.

I know that gaps can be closed. And they can be closed substantially, more than I think we believe.

We’re making new investments in the development of gasoline and diesel and jet fuel that’s actually made from a plant-like substance-algae... We could replace up to 17 percent of the oil we import for transportation with this fuel that we can grow right here in the United States.

My biggest frustration so far is the fact that this society has not been willing to take some basic steps to keep guns out of the hands of people who can do just unbelievable damage. We're the only developed country on Earth where this happens. ... And it happens once a week. And it's a one-day story. ... The country has to do some soul-searching on this.

I can document this past week [of presidency] we've put out memos from every agency showing what did we do. Try to be as honest as possible. There's a little hype involved obviously. It's spin because it's our agencies. We feel some pride about it. But tried to be self-critical as well.

The real problem, if you look at how, for example, Hezbollah got a lot of missiles that are a grave threat to Israel, it's not because they were legal, it's not because somehow that was authorized under international law; it was because there was insufficient intelligence or capacity to stop those shipments.

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.