"Granted, it is now thousands of years - twenty thousand perhaps - since the people of the Galaxy have concerned themselves with Earth, how is it possible that we have all forgotten our planet origin?"
— Trevize, Chapter 1, Page 5

"You can't have geniuses and saints without having people far outside the norm, and I don't see how you can have such things on only one side of the norm."
— Trevize, Chapter 1, Page 26

"If we only obey those rules that we think are just and reasonable, then no rule will stand, for there is no rule that some will not think is unjust and unreasonable."
— Bliss, Chapter 4, Page 80

"The study of the oldest," said Pelorat, "is not a well-rewarded niche in the corridors of learning, so the first-class scholars, even in the field of primeval history, would not tent too find their way there."
— Pelorat, Chapter...