We've got this arc of instability from North Africa to South Asia, and we have to pay close attention to it. And we have to build coalitions, something that I did to take on the Iranian nuclear program, and what I will do as president to make sure that we defeat these terrorist networks.

Everybody has some dysfunction in their families.

The United States remains the only major country on earth that doesn't guarantee health care to all of our people. And yet we are spending almost twice as much per capita. We have a massively dysfunctional health care system. And I do believe in a Medicare for all single-payer system, whether a small state like Vermont can lead the nation, which I certainly hope we will, or whether it's California or some other state.

Every one of us every day has choices to make about the kind of person we are and what we wish to become. You can decide to be someone who brings people together, or you can fall prey to those who wish to divide us. You can be someone who educates yourself, or you can believe that being negative is clever and being cynical is fashionable. You have a choice.

If I'm not mistaken, that relationship [of Barack Obama] with Mr.[Bill] Ayers on this board continued after 9/11 and after his reported comments, which were deeply hurtful to people in New York and, I would hope, to every American, because they were published on 9/11, and he said that he was just sorry they hadn't done more.

We've got to reach out to Muslim countries.We've got to have them be part of our coalition. If they hear people running for president who basically shortcut it to say we are somehow against Islam, that was one of the real contributions, despite all the other problems, that George W. Bush made after 9/11 when he basically said after going to a Mosque in Washington, we are not at war with Islam or Muslims.

Every president, if you watch what they look like when they come into office, you can see their hair turn white because it's such a hard job.