If you want to run for the United States Senate, you hire a consultant who will do polling for you, who will tell you the kinds of television ads you should run, who will tell you that most of the money you raise has got to go into TV. Raising money, and then putting that money into the hands of consultants, who then put on TV ads - that's more or less what campaigns are about. We've got to change that.

I worry very much about kids growing up in a society where they think: "I'm not going to talk about this issue, read this book or explore this idea because someone may think I'm a terrorist." That's not the kind of free society I want for our children.

The fossil fuel industry for too long has shifted enormous costs of carbon pollution onto the public.

Experience is not the only point, judgment is. And once again, back in 2002, when we both [with Hillary Clinton] looked at the same evidence about the wisdom of the war in Iraq, one of us voted the right way and one of us didn't.

If you look at the newspapers here - the Washington papers - most of the discussion deals with campaign gossip.

Super PACs and a corrupt campaign finance system are destroying American democracy. We're proud that we have received four million individual contributions, more than any candidate in American history at this point.

I do not believe that we must maintain a bloated military budget which spends almost as much as the rest of the world combined and may lead us to perpetual warfare in the Middle East.