Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.

The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

I've written a number of books that have to do with the evolution of humans, human intelligence, human emotions.

We hunger to understand, so we invent myths about how we imagine the world is constructed - and they're, of course, based upon what we know, which is ourselves and other animals. So we make up stories about how the world was hatched from a cosmic egg or created after the mating of cosmic deities or by some fiat of a powerful being.

Death comes not to the living soul, nor age to the loving heart.

I'm hungry in the ways that every artist is, but I also have this extra layer. I've done a lot of things that were consciously not for money, but because I'm so convinced I'm going to die in my mid-30s, I'm like, 'That's not what's important. Doing cool stuff and having that legacy is what's important.'

The U.S. routinely ranks lower than other countries in health outcomes such as infant mortality.

Sometimes I test myself saying, 'If I get a death sentence if I don't make this movie, would I still make this movie?'