America's government has to get the public investments right.

Right now, when you go and hit the light switch in your house, you're participating in a state-protected monopoly. You're being forced to accept dirty power from a single producer.

I learned more in those six months [ in the White House] than in the prior six years. I don't think that anybody who has had the privilege to serve the country at that level should walk out and behave like a crybaby. And I plan to continue to serve the country in other capacities.

The time has come to move beyond eco-elitism to eco-populism.

People can tell if you don't like 'em. African Americans can tell we're not welcome in the Republican Party no matter how many times they say we are. All the signals that it's a party that tolerates anti-black racism is very clear.

I used to go to all the environmental conferences when I wasn't an invited speaker. I was just somebody in the back taking a lot of notes. It was when I was least visible that I came up with the most cool stuff. Now, because I don't get to be Clark Kent, I feel like my learning curve is slowing way down. I'm always afraid the conversation will move on and I'll be up at the front of the room saying last year's speech.

I am for literally all of the underdogs that I can command and demand better of everyone, including myself.