"It is impossible to foretell the future with any degree of accuracy, that it is impossible to rehearse life. A fault in the scenery, a face in the audience, an interruption of the audience on to the stage, and all our carefully planned gesture mean nothing, or mean too much."

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Now you see, Dr. Stadler, you're speaking as if this book were addressing to a thinking audience. If it were, one would have to be concerned with such matters as accuracy, validity, logic and the prestige of science. But it isn't. It's addressed to the public.

— Ayn Rand