Demagogues like [Donald] Trump come along. He says I know what the cause is. Remember, later, the cause was that Mexicans who are coming to this country, well, they were criminals or rapists. Now it is Muslims.

We have to say to the billionaire class, enough is enough. You cannot have it all. You are going to pay more in taxes.

What the American people want to see in their president is somebody who not necessarily can win every fight, but they want to see him stand up and fight for what he believes, take his case to the American people.

I think people have a right to speak. And you have a right if you're on a college campus not to attend. You have a right to ask hard questions about the speaker if you disagree with him or her.

I think in terms of who can be trusted, I think the evidence is clear that there has been no candidate that I have ever seen who lies more often than does Donald Trump. I mean and that's just not me saying it, that's what any independent media analysis has shown. So in terms of trust, you really can't trust a word, I think, that Mr. Trump has to say.

It reminds me in some ways of the debate taking place in this country and around the world in the late 1930s. There were people, in this Congress, in the British Parliament saying, 'Don't worry! Hitler's not real! It'll disappear'.

Subsidies for the oil, gas and coal industries are projected to cost taxpayers more than $135 billion in the coming decade. At a time when scientists tell us we need to reduce carbon pollution to prevent catastrophic climate change, it is absurd to provide massive subsidies that pad fossil-fuel companies' already enormous profits.