There is no nation on the planet better able to adapt to this change than our nation. We must able to work collaboratively with others. We must anticipate these threats before they happen. This is the new sort of challenge, the new sort of threat that does, in fact, require new thinking, fresh approaches and new leadership.

Great nations need organizing principles, and 'Don't do stupid stuff' is not an organizing principle.

I've heard [Bernie] Sanders comments, and it's really caused me to wonder who's left in the progressive wing of the Democratic Party. Under his definition, [Barack] Obama is not progressive because he took donations from Wall Street; [Joe] Biden is not progressive because she supported Keystone; [Jeanne] Shaheen is not progressive because she supports the trade pact. Even the late, great Paul Wellstone would not fit this definition because he voted for DOMA.

I'm very proud and grateful to have the support of so many elected Vermonters and former officials. Two former governors, the current governor, the current other senator. I really appreciate that.And I think it's because they've worked with me, they've seen what I do. They know what kind of a colleague I am. They want me as their partner in the White House. And that's exactly what I will do.

I can survive setbacks, I've survived a lot of setbacks in my life. I don't see them as anything other than the natural ebb and flow of life and politics.

I think it's so important for all of us to be able to see ourselves represented in the books we read and the movies and TV shows we watch.

We need steady hands, not a president who says he's neutral on Monday, pro-Israel on Tuesday, and who knows what on Wednesday, because everything's negotiable.