"Few have heard of Fra Luca Pacioli, the inventor of double-entry bookkeeping; but he has probably had much more influence on human life than has Dante or Michelangelo."

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To devise an information processing system capable of getting along on its own - it must handle its own problems of programming, bookkeeping, communication and coordination with its users. It must appear to its users as a single, integrated personality.

— Cliff Shaw