We will hang the capitalists with the rope that they sell us.

Often attributed to Lenin or Stalin, less often to Marx. According to the book, "They Never Said It", p. 64, the phrase derives from a rumour that Lenin said this to one of his close associates, Grigori Zinoviev, not long after a meeting of the Politburo in the early 1920s, but there is no evidence that he ever did. Experts on the Soviet Union reject the rope quote as spurious.