"The individual human being is unpredictable, but the reactions of human mobs, Seldon found, could be treated statistically. The larger the mob, the greater the accuracy that could be achieved. And the size of the human masses that Seldon worked with was no less than the population of the Galaxy, which in his time was numbered in the quintillions."
P.3

"Ebling Mis said it kept itself secret. Only secrecy can turn its weakness to strength."
P.21

"The point being made is that the minds assembled understood thoroughly the workings of each other, not only by general theory but by the specific application over a long period of these theories to particular individuals. Speech as known to us was unnecessary. A fragment of a sentence amounted almost to long-winded redundancy. A gesture, a grunt, the curve of a facial line—even a significantly timed pause yielded informational juice...