“It is hard to see how one could begin to develop a quantum-theoretical description of brain action when one might well have to regard the brain as "observing itself" all the time!”

—  Roger Penrose , book The Emperor's New Mind

Source: The Emperor's New Mind (1989), Ch. 10, Where Lies the Physics of the Mind?, p. 447.

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Roger Penrose 15
English mathematical physicist, recreational mathematician … 1931

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