The question is: do we pay a little bit more now? Or do we pay a whole lot later? For the equivalent of a postage stamp a day for each American, we can put a price on carbon today that will send a signal to private capital to invest in the clean technologies of tomorrow. Taking a vast portfolio of new energy solutions to scale will ultimately drive down costs through competition.

We're going to do three things: teach-ins across the country so people can learn about each other's issues and causes; parties with a purpose so we can shake our butts and not let this man steal our joy; and we're going to do big concerts and revivals with some of the biggest artists in the world. If [Donald] Trump can have 20,000 people for big hate rallies then we can have 40,000 people in arenas for love rallies.

I think we were naive during the first two years of the [Barack] Obama Administration because the Republicans didn't fight us on this point during the 2008 Presidential Election. Obama and McCain both ran on a clean energy platform. But now, uncontested lies have eroded hard-won public understanding. So, we have to go back and make the case again.

I want to be remembered as one of the great innovators among social justice advocates of the 21st Century.

If we do nothing, the ensuing climate catastrophe will wreck our economy - including wreaking havoc on our food production systems. All credible scientists agree on this point.

Well, we in America are about to break up with oil. Why not break up with poverty and discrimination too?

The laws of supply and demand drive up the price, inevitably, over time. But solar and wind are abundant and renewable resources.