“Sometime in the twenty-first century, our self-deluded recklessness will collide with our growing technological power. One area where this will occur is in the meeting point of nanotechnology, biotechnology, and computer technology. What all three have in common is the ability to release self-replicating entities into the environment.”

“Nobody does anything until it’s too late. We put the stoplight at the intersection after the kid is killed.”

“‘They didn’t understand what they were doing.’ I’m afraid that will be on the tombstone of the human race.”