It means joining with allies to deploy renewable energy technologies -- both at home and around the world -- to confront the very real and present danger of potentially irreversible climate change.

Let us wage a moral and political war against the billionaires and corporate leaders, on Wall Street and elsewhere, whose policies and greed are destroying the middle class of America.

We are going to do everything that we can to protect working families in this country.

In my view, one of the major reasons that we have so many people in jail is that we have turned our backs on a lot young people.

For Democrats to win, they're going to have to address the needs of working people. They're going to have to address the needs of the middle class.

Even in South Carolina, as badly as we did, and we did very badly, we won the votes of people 29 years of age or younger. The future of the Democratic Party, the future of this country is involving young people in the political process, getting them to stand up for their rights.

Our goal there, in my view, is to work and lean strongly on China to put as much pressure. China is one of the few major countries in the world that has significant support for North Korea, and I think we got to do everything we can to put pressure on China. I worry very much about an isolated, paranoid country with atomic bombs.