Beatrice suddenly turned her back on the painting, walked out into the courtyard again. The idea she wanted to add to her book was straight in her mind now.
  "The worst thing that could possibly happen to anybody," she said, "would be to not be used for anything by anybody."
  The thought relaxed her. She lay down on Rumfoord's old contour chair, looked up at the appallingly beautiful rings of Saturn -- at Rumfoord's Rainbow.
  "Thank you for using me," she said to Constant, "even though I didn't want to be used by anybody."
  "You're welcome," said Constant.