I think we should look to countries like Denmark, like Sweden and Norway, and learn from what they have accomplished for their working people.

Social Security Works! puts expanding Social Security front and center on the national agenda, where it belongs. Everyone who has a stake in the debate should read this important book.

One of the issues I'm really happy about is that recently, Secretary Clinton and I worked out an agreement on higher education, making public colleges and universities tuition free for every family in America earning less than 125,000 bucks. Didn't go as far as I wanted. But that's 83 percent of the population in this country.

What I do know is that drones are a modern weapon. When used effectively, when taking out ISIS or terrorist leaders, that's pretty impressive. When bombing wedding parties of innocent people and killing dozens of them, that is, needless to say, not effective and enormously counterproductive. So whatever the mechanism, whoever is in control of that policy, it has to be refined so that we are killing the people we want to kill and not innocent collateral damage.

What I think people should realize is that programs like Social Security, programs like Medicare, programs like the Veterans Administration, programs like your local park and your local library - those are, if you like, socialist programs; they're run by [and] for the public, not to make money. I think in many ways we should expand that concept so that the American people can enjoy the same benefits that people all over the world are currently enjoying.

Let's be honest, dental care in America is extremely expensive, period.

Will I criticize Hillary Clinton on her position of TPP, or the lack of position? Will I criticize her on her views of Wall Street? Will I criticize her on foreign policy? That's what democracy is about, but taking cheap shots at people, making it personal, I don't think that's what politics should be about.