"The words "environment," "medium" denote something more than surroundings which encompass an individual. They denote the specific continuity of the surroundings with his own active tendencies."

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Human has always striven to retain the past, to keep it convincing; there's nothing wicked in that. Without it we have no continuity; we have only the moment. And, deprived of the past, the moment - the present - has little meaning, if any.

— Philip K. Dick