"I believe you're right," Carver agreed. "And it would be a valuable scientific advancement.... But the medicine man unfortunately won't give us any."
"Buying isn't the only way." Fred unholstered his revolver and checked the chambers.
"I see, I see," Carver said, his red face turning slightly pale. "But have we the right?"
"What do you think?"
"Well, they are inferior. I believe I have proven that conclusively. You might indeed say that their lives don't weigh heavily in the scheme of things. Hm, yes—yes, Fred, we could save Terran lives with this!"
"We could save our own lives," Fred said. "Who wants to punk out ahead of time?"
Carver stood up and determinedly loosened his gun in its holster. "Remember," he told Fred, "we are doing this in the name of science, and for Earth."
"Absolutely, Professor," Fred said, moving toward the port, grinning.
They found Deg near the medicine hut. Carver said, without preamble, "We must have some sersee."