I would love it if everybody in America agreed with me on every issue. I can't get my wife to agree with me on every issue, let alone the American people. It's called democracy. That's what it's about.

What we need to do is to stand up to the big money interests, and the campaign contributors. When we do that, we can, in fact, transform America.

Climate change is real, caused by human activity and already devastating our nation and planet. The United States must lead the world in combating climate change and transforming our energy system away from fossil fuels and toward energy efficiency and sustainability.

97 percent of the scientists who wrote articles in peer-reviewed journals believe that human activity is the fundamental reason we are seeing climate change.

I know a great country that needs to be rebuilt in terms of roads, bridges, schools. That is called the United States of America.

I believe that climate change is the great global crisis that we face, environmental crisis. I believe that if you're serious about climate change, you don't encourage the excavation and transportation of very dirty oil.

We need a very progressive and strong agenda to bring people into the political process because I worry very much about the future of the American democracy where so many people are giving up.