“I've heard that where there are machines, there are bound to be machine worries; where there are machine worries, there are bound to be machine hearts. With a machine heart in your breast, you've lost what was pure and simple; and the loss of the pure and simple leads to restlessness of the spirit. Where there is restlessness of the spirit, the Tao no longer dwells. It's not that I don't know about your machine—I would be ashamed to use it!”