The expense and time involved are astronomical. However, we sent a third vessel out, a much smaller and faster one than the first two. We have learned much about interstellar drives since a hundred years ago; that is all I can tell you about them.

``But the third ship came back several years ago and reported & & &.''

``That it had found a planet on which human beings could live and which was already inhabited by sentient beings!'' said Hal, forgetting in his enthusiasm that he had not been asked to speak.

Macneff stopped pacing to stare at Hal with his pale blue eyes.

``How did you know?'' he said sharply.

``Forgive me, Sandalphon,'' said Hal. ``But it was inevitable! Did not the Forerunner predict in his Time and the World Line that such a planet would be found? I believe it was on page 573!''

Macneff smiled and said, ``I am glad that your scriptural lessons have left such an impression.''

How could they not? thought Hal. Besides, they were not the only impressions. I still bear scars on my back where Pornsen, my gapt, whipped me because I had not learned my lessons well enough. He was a good impresser, that Pornsen. Was? Is! As I grew older and was promoted, so was he, always where I was. He was my gapt in the creche. He was the dormitory gapt when I went to college and thought I was getting away from him. He is now my block gapt. He is the one responsible for my getting such low M.R.'s.