You want to know the way to raise money? Put a transaction fee on Wall Street, so maybe we can curb some of the speculation and raise some money.

I'm not really opposed to people changing their minds. I'm much more concerned with people who never change their minds no matter what new information is available.

Look, if you have somebody who doesn't have health insurance, who doesn't have a doctor or dentist, and in order to deal with their cold or flu or dental problem, they go to an emergency room - in general, that visit will cost ten times more than walking into a community health center.

There is a reason why these people [from Wall Street] are putting huge amounts of money into our political system. And in my view, it is undermining American democracy and it is allowing Congress to represent wealthy campaign contributors and not the working families of this country.

I believe, along with Pope Francis and almost all scientists, that climate change is threatening this planet in horrendous ways, and that we have to be aggressive in transforming our energy system away from fossil fuel and defeat the Keystone Pipeline.

As a single-payer advocate, I believe that at the end of the day, if a state goes forward and passed an effective single-payer program, it will demonstrate that you can provide quality health care to every man, woman and child in a more cost-effective way.

When we are fighting for huge stakes - we're fighting for the future - future of the planet in terms of climate change. We're fighting for the future of American democracy.