For our own species, evolution occurs mostly through our behavior. We innovate new behavior to adapt.

I am certain there is too much certainty in the world.

No one escapes from life alive.

And entertainment has nothing to do with reality. Entertainment is antithetical to reality.

Human beings are so destructive. I sometimes think we're a kind of plague, that will scrub the earth clean. We destroy things so well that I sometimes think, maybe that's our function. Maybe every few eons, some animal comes along that kills off the rest of the world, clears the decks, and lets evolution proceed to its next phase.

Science is as corruptible a human activity as any other.

The past history of human belief is a cautionary tale. We have killed thousands of our fellow human beings because we believed they had signed a contract with the devil, and had become witches. We still kill more than a thousand people each year for witchcraft. In my view, there is only one hope for humankind to emerge from what Carl Sagan called "the demon-haunted world" of our past. That hope is science.