"[A woman waiting for him in the Kremlin asked Gobachev] "Was communism invented by a politician or a scientist?" [He replied] "Well, a politician." She said, "That explains it. The scientist would have tried it on mice first.""

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What is Communism? Communism is the doctrine of the conditions of the liberation of the proletariat. What is the proletariat? The proletariat is that class in society which lives entirely from the sale of its labor and does not draw profit from any kind of capital; whose weal and woe, whose life and death, whose sole existence depends on the demand for labor.

— Friedrich Engels