"But when you're deprived of it for a lengthy period then you value human companionship. But you have to survive and so you devise all kinds of mental exercises and it's amazing."
"My first care the following morning was, to devise some means of discovering the man in the grey cloak."
"The modern mind tends to be more and more critical and analytical in spirit, hence it must devise for itself an engine of expression which is logically defensible at every point and which tends to correspond to the rigorous spirit of modern science."
"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."
"Human subtlety will never devise an invention more beautiful, more simple or more direct than does nature because in her inventions nothing is lacking, and nothing is superfluous."