_"We live here under certain restrictions that many of us do not like. Certainly, no one likes to be unable to step out under the open sky without wearing a bulky marsuit and an oxygen tank. Certainly, no one likes to be rationed on water and meat throughout the foreseeable future._ _"But what we have to remember is that absolute discipline has always been a requirement for those courageous souls in the vanguard of human progress._ _"Witchcraft--the practice of extrasensory perception, if you prefer the term--is forbidden on Mars because to practice it one must differ from his fellow men when the inexorable dangers of our frontier demand that we work together. To practice it, one must devote time and mental effort to untried things when our thin margin of safety makes concentrated and combined effort necessary for survival. That is why witchcraft is forbidden on Mars._ _"Let those who yet cling to the wistful liberalism of Earth label us conformists if they will. I say to you that until Mars is won for humanity, we cannot afford the luxury of nonconformity._ _"Gentlemen, I give you the prosecution's case."_ Maya stared out the window. This whole side of Ultra Vires was dark, except for a rectangle of light cast from a window a little distance away--the window of Goat Hennessey's study. In this rectangle, the red sand of the desert lay clear and stark. Near the end of the rectangle lay an indistinct, crumpled, oblong figure. Puzzled, Maya studied it. It looked like a body to her. * * * * * In the study, Nuwell gazed at the skinny doctor with angry brown eyes. "The bulletins sent to you, as well as other researchers, gave specific instructions that research was to be directed toward human utilization of certain foods now being developed," accused Nuwell. "I thought this was more important," replied Goat. "You thought! You're not on Earth, where scientists can get government grants and go jaunting off on wild research projects of their own." "I still think this is more important," said Goat stubbornly. "I know that all of us are expected to co-operate and stick to tried and accepted lines so we won't be wasting time and material. Perhaps I was wrong in not doing that initially. But now I've proved that this line of research can be followed profitably, so its continuance now can't be looked on as a waste of time." "Scientists should leave political direction to more experienced men," said Nuwell in an exasperated tone. "This is not merely a matter of time waste, or nonconformity. The Mars Corporation operates our sole supply line to Earth, Dr. Hennessey, and that supply line brings to man on Mars all the many things he needs to live here. The Earth-Mars run is an expensive operation, and it's important that it remain economically feasible for Marscorp to operate it.