"Non-operational ideas are non-behavioral and subversive. The movement of thought is stopped at barriers which appear as the limits of Reason itself."

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If being an anti-art artist is difficult, being an anti-art art historian is a hard position indeed. His doctrinal revolutionism brings forth nothing new in art but reenacts upheavals on the symbolic plane of language. It provides the consoling belief that overthrows are occurring as in the past, that barriers to creation are being surmounted, and that art is pursuing a radical purpose, even if it is only the purpose of doing away with itself.

— Harold Rosenberg