"You tried, father. You did your best."

"Yes, my son, I did try. But if I had attempted to feign emotions I did not feel your mother would have seen through the pretense. She would then have turned from me completely. Without her I could not have had you, my son."

"And now, father, what will we do?"

"Now the ship has been repaired and is waiting for us. Every day for eight years I went to the hill and worked on the ship. It was badly wrecked, my son, but now my patience has been rewarded, and every damaged astronavigation instrument has been replaced."

"You never went to the office, father? You never went at all?"

"No, my son. My stand-in worked at the office in my place. I instilled in your mother's mind an intense dislike and fear of the office to keep her from ever coming face to face with the stand-in. She might have noticed the difference. But I had to have a stand-in, as a safeguard. Your mother might have gone to the office despite the mental block."

"She's gone now, father. Why did you send for her?"

"To avoid what she would call a scene, my son. That I could not endure. I had the stand-in summon her on the office telephone, then I withdrew all vitality from it. She will find it quite lifeless. But it does not matter now. When she returns we will be gone."

"Was constructing the stand-in difficult, father?"

"Not for me, my son. On Mars we have many androids, each constructed to perform a specific task. Some are ingenious beyond belief—or would seem so to Earthmen."