Ribbon in the Sky by Murray Leinster — Read

"Civilization is based upon rational thought applied to the purposes / of men. Most mistakes occur in the process of thinking. But there / can be a deep and fundamental error about purposes. It is simply a / fact that the purposes of human beings are not merely those of / rational animals. It is the profoundest of errors to believe / otherwise -- to consider, for example, that prosperity, or pleasure, / or even survival, cannot be priced so high that their purchase is a / mistake. " / _The Practice of Thinking_ Fitzgerald

There was a sheet of paper fastened outside the combination lock of / the Med Ship's exit port. It said that Calhoun had been taken away by / men of Two City, to tend some sick person. It said that he would be / returned. The latter part might not be believed, but the Med Ship might / not be destroyed. The colony of the landing grid might try to break / into it, but success was unlikely.