In fact, I think more broadly about what an audience requires, but I want an audience to be fascinated by the process of finding an answer, or finding out there isn't one.

You’re never going to be the same person you are right now.

When did Noah build the boat? - Before the rain.

I have a very low regard for cynics. I think it's the beginning of dying.

If we want energy security, then we have to reduce our appetite for fossil fuels. There's no other way. Other issues may crowd the headlines, but this is our fundamental challenge. Big challenges require bold action and leadership. To get the United States off fossil fuels in this uneasy national climate of terrorism and conflict in the Persian Gulf, we must treat the issue with the urgence and persistance it deserves. The measure of our success will be the condition on which we leave the world for the next generation.

Sometimes the failures can be exciting and fun. It's just a step on the road, it's not the end of something.

I think there was something that made us not pay attention to climate change. Something that was up there. There was a saying when we were trying to pay attention to the environment that people used this phrase NIMBY - not in my back yard. People were saying, ‘I don’t care, it is not in my back yard.’ But now it’s in everyone’s back yard.