The campaign was a more significant training ground than I think people give it credit for. By the time I got here, I think I had a pretty good sense of what was required. But the circumstances in which I came in were different than most executives, right? The enterprise was in the midst of a major crisis.

Under my plan of a cap-and-trade system, electricity rates would necessarily skyrocket.

Non-Islamic, non-foreign-motivated terrorist actions have killed at least as many Americans on American soil as those who were promoted by jihadists. But what we have also seen is ISIL evolve, because of the sophistication of their social media, to a point where they may be inspiring more attacks - even if they're self-initiated, even if they don't involve complex planning - than we would have seen some time ago.

If you look at sort of how politics has divided itself here in this country, the big divide right now is between urban areas, which have become increasingly Democratic, and rural or exurban areas that feel as if they're being ignored.

In America, we started the public school system very early in the century, and as a consequence we had more skilled workers than any nation on Earth, which meant that we were more productive than any nation on Earth.

The most important thing we can do is to make sure that we are creating jobs in this country. But not just jobs, good paying jobs. Ones that can support a family.

I think we did a really good job in saving this economy and putting us back on the track of growth.