"We also know that religion, as the Marxists have always insisted, has, too often, like an opiate, tended to put people to sleep to the reality and the need for the present struggle for peace and justice."

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We Marxists believe that a revolution will also take place in other countries. But it will take place only when the revolutionaries in those countries think it possible, or necessary. The export of revolution is nonsense. Every country will make its own revolution if it wants to, and if it does not want to, there will be no revolution.

— J. Stalin