Así surgió en la ciudad una gran clase de proletarios (Esta palabra proviene de una voz latina que significa - Isaac Asimov

There was no doubt about it: the City was the culmination of man's mastery over the environment. Not space travel, not the fifty colonized worlds that were now so haughtily independent, but the City.

I received the fundamentals of my education in school, but that was not enough. My real education, the superstructure, the details, the true architecture, I got out of the public library. For an impoverished child whose family could not afford to buy books, the library was the open door to wonder and achievement, and I can never be sufficiently grateful that I had the wit to charge through that door and make the most of it. Now, when I read constantly about the way in which library funds are being cut and cut, I can only think that the door is closing and that American society has found one more way to destroy itself.

the eye were no more than sense organs. The brain was no more than a central switchboard, encased in bone and removed from the working surface of the body. It was the hands that were the working surface, the hands that felt and manipulated the universe. Human beings thought with their hands. It was their hands that were the answer of curiosity, that felt and pinched and turned and lifted and hefted. There were animals that had brains of respectable size, but they had no hands and that made all the difference.