In the case of climate change, denial is not a survival strategy.

The most important thing is that you be a good person and you live by the golden rule of do unto others. If you live by that, that's all I care about.

It’s important to ignite scientific curiosity, including in people like Kim Kardashian.

I’m not some sort of blind slave to the president. I got elected without the president’s endorsement, and I think that has served me really well.

The greatest danger to our future is apathy.

As the Democratic Party, we have a lot of work to do to make up for our failures in the past. We got crushed in this last election.

In every great challenge this country has faced, it has turned to the essential strength of its people, united around a common goal.

In the past, human progress had to come at the cost of the environment. If we wanted energy, we had to burn wood or we had to burn fossil fuels. If we wanted to grow more food, we had to expand farmland, often at the cost of forests. But technology and innovation means we're very quickly decoupling these impacts, such that this conflict is no longer true.

We’ll be fine with the environment. We can leave a little bit, but you can’t destroy businesses.