"There had been many times when man had been forced to adopt the only right opinion. Each time man’s forward thrust had slackened, vegetated, and died. Once, through the dark ages, the period had lasted almost a thousand years."

“That kind of therapy, the use of force to make a man give up his convictions, has been tried since the dawn of history. I think we should have learned by now that it won’t work.”

“Somehow I got the impression that instead of looking into a crystal ball, they would be more inclined to look out of one.”

“Everyone recognized that only five percent of all the people born ever amount to anything at all. Everyone humbly thanked his providential stars that through his own personal efforts and merit he had become one of the superior five percent. Everyone looked with pity and contempt upon the ninety-five percent who did not share his grace.”

“People will tie in with a fanatic if for no other reason than to break the monotony of their lives.”

“It took two thousand years for man to move from the concept that amber was a stone with a soul to the concept of static electricity.”

“The public wants miracles. The public demands miracles; and if one source ceases to provide them, they will turn to another source which seems to accomplish the spectacular. Even while they resented and opposed the scientific attitude, they lapped up the miracles which this attitude accomplished with glee.”