- [first lines]
- Prof. Victor Bergman: A sun like ours. Planet Ariel with its atmosphere. It's a perfectly balanced little solar system.
- Dr. Helena Russell: Kano, has Computer analyzed my data yet?
- [he hands her a printout, and she likes what she reads]
- Dr. Helena Russell: Computer's telling us nice stories today.
- David Kano: Computer never...
- Dr. Helena Russell: "... tells stories".
- [last lines]
- Cmdr. John Koenig: Can you hear me?
- Alien Probe: And understand your thoughts.
- Cmdr. John Koenig: Then you must have known we came in peace.
- Alien Probe: We believe your intentions, but we have been watching the progress of your world since the beginning of time. Human nature is such that we could not afford to take the risk.