"For education among all kinds of men always has had, and always will have, an element of danger and revolution, of dissatisfaction and discontent."

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. . . Moon-Watcher felt the first faint twinges of a new and potent emotion. It was a vague and diffuse sense of envy--of dissatisfaction with his life. He had no idea of its cause, still less of its cure; but discontent had come into his soul, and he had taken one small step toward humanity.

— Arthur C. Clarke