The existence of so much leisure would have created tremendous problems a century before. Education had overcome most of these, for a well stocked mi… - Arthur C. Clarke

If man can live in Manhattan, he can live anywhere.

That requires as much power as a small radio transmitter — and rather similar skills to operate. For it's the application of the power, not its amount, that matters. How long do you think Hitler's career as a dictator of Germany would have lasted, if wherever he went a voice was talking quietly in his ear? Or if a steady musical note, loud enough to drown all other sounds and to prevent sleep, filled his brain night and day? Nothing brutal, you appreciate. Yet, in the final analysis, just as irresistible as a tritium bomb.

Kolya believed that the Mongols’ expansion was pathological. It was a ghastly spiral of positive feedback, born of Genghis Khan’s unquestioned military genius and fueled by easy conquests, a plague of insanity and destruction that had spread across most of the known world.