In a two-year period, all my dreams came true: the birth of a son... publishing a best-selling book... launching a successful organization... joining the [Barack] Obama Administration... And then all my nightmares came true.

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.

We should use the transition to a better energy strategy as an opportunity to create a better economy and a better country all around.

Every person with a pulse has a responsibility to stand in solidarity with the Muslim community that is on the front lines fighting against groups like ISIS, both militarily and ideologically, every day, and now on the front line of standing up for civil liberties and civil rights to make America great. [They] are the best insurance for the safety of all Americans.

You don't get fewer followers saying outrageous stuff on Twitter.

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.

Let's stop wasting billions of dollars on prisons, which send people home who are too often less capable and more damaged than when they went in. We would have safer neighborhoods if we spent the same money on true rehabilitation, job training, employment and entrepreneurship.