Writing a book is a bit like going on location for a movie. You're absent from your life, your family, and your friends. You're psychologically gone, so you might as well be physically gone.

Often I feel I go to some distant region of the world to be reminded of who I really am.

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

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.

There is always a cause for fear. The cause may change over time, but the fear is always with us.

They don't have intelligence. They have what I call 'thintelligence.' They see the immediate situation. They think narrowly and they call it 'being focused.' They don't see the surround. They don't see the consequences.

Theories are just fantasies. And they change.