But complex animals had obtained their adaptive flexibility at some cost--they had traded one dependency for another. It was no longer necessary to change their bodies to adapt, because now their adaptation was behavior, socially determined. That behavior required learning. In a sense, among higher animals adaptive fitness was no longer transmitted to the next generation by DNA at all. It was now carried by teaching.

No man is so good as to be free from all evil, nor so bad as to be worth nothing.

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

In truth, one of our company, the solemn warrior Ecthgow, was so demented from liquor that he was drunk while still upon his horse, and he fell attempting to dismount. Now the horse kicked him in the head, and I feared for his safety, but Ecthgow laughed and kicked the horse back.

At forty, I was too old to work as a programmer myself anymore; writing code is a young person’s job.

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.

It takes enormous effort to avoid all theories and just see.