"Everything is a reenactment. We are reenacting the world in the mind. The world is not inside there. It does not reside in the gray matter of the brain."

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Twice in my life I have spent two weary and scientifically profitless years seeking evidence to corroborate dearly loved hypotheses that later proved to be groundless; times such as these are hard for scientists-days of leaden gray skies bringing with them a miserable sense of oppression and inadequacy.

— Peter Medawar