Environmentalists and clean energy champions should stop telling people that we are working for "sustainability," which nobody understands.

I want the coal miners, who've been American heroes, who kept the lights put on for black people and white people for a hundred years, and who now are too sick to work, I want them to be able to go see a doctor. I don't care who they vote for. I don't care if they vote for a Tea Party Republican, I'm fighting for you because I voted for you to live in a country where we don't have disposable people.

I'm willing to forgo the cheap satisfaction of the radical pose for the deep satisfaction of radical ends.

We have to accept that some very toxic stuff was marbled into the Trump phenomenon.

People forget: solar panels don't put themselves up. Wind turbines don't manufacture themselves. Businesses don't retrofit themselves to waste less energy and water, nor do homes weatherize themselves.

I've had a chance to meet some of my civil rights heroes and, more recently, members of the young generation around [Barack] Obama, people in their teens and twenties who were determined to make history and who were too idealistic to think that what they were trying to do might be impossible. They proved that visionary pragmatism can win over the majority. That comes from a particular place in your heart that generation Y is offering America. They just can't afford to be naive now, in terms of the ferocity of the opposition.

The prospects of green economic opportunity is going to be determined to a great extent by politicians arriving at some sort of bi-partisan resolution.