One of the challenges over the last decade is America has done experiments in nation building in places like Iraq and Afghanistan and we've neglected, for example, developing our own economy, our own energy sectors, our own education system. And it's very hard for us to project leadership around the world when we're not doing what we need to do.

There's no doubt that probably at least once a week, maybe once a day, I said, "Ah, I should have done that better."

We have to focus on how do we ensure the economy works for everybody, and not just a few.

I wonder, sometimes, whether men and women in fact are capable of learning from history--whether we progress from one stage to the next in an upward course or whether we just ride the cycles of boom and bust, war and peace, ascent and decline.

Some of Donald Trump's gifts that obviously allowed him to execute one of the biggest political upsets in history, those are ones that hopefully he will put to good use on behalf of all the American people.

I believe in evolution, scientific inquiry, and global warming; I believe in free speech, whether politically correct or politically incorrect, and I am suspicious of using government to impose anybody's religious beliefs -including my own- on nonbelievers.

The next phase and this is part of what I'm interested in doing after I get out of the presidency is to make sure that I'm working with that next generation so that they understand you can't just rely on inspiration. There's a little perspiration involved in bringing about change too. That you have to be organized, that you have to vote even when it's not exciting.