"He could hear Pa’s voice saying, “A man’s religion, his sect, is his own affair. But those people have no religion or…"

"“Why did they do it?” he asked. “Because they’re afraid.” “Of what?” “Of yesterday,” said Mr. Hostetter. “Of tomorrow.”"

"There’s never been an act done since the beginning, from a kid stealing candy to a dictator committing genocide, that…"

"“I guess we’ve got a lot to learn.” “Quite a lot,” said Hostetter thoughtfully. “It won’t be easy, either. So many th…"

"You can’t destroy knowledge. You can stamp it under and burn it up and forbid it to be, but somewhere it will survive."

"“I grew up with the idea of it,” said Hostetter. “Nobody ever taught me that it was evil or forbidden, or that God ha…"

"“Was he trying to frighten you?” “I don’t think so,” said Len. “I think he was just telling me the truth.”"

"“I thought they knew,” Len said. “I thought they were sure of it.” “Research isn’t done that way.” “But how can they …"

"“Hell, how do you think the human race ever learned anything, except by trial and error?” “But it all takes such a lo…"

"The man who doesn’t fear, doesn’t live long. I fear everything."