"Practice is the criterion of truth."
— Vladimir Lenin
January 1, 1970
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Added on April 10, 2026
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Atheism activists
Anti-imperialists
Russian communists
Lawyers from Russia
Leninists
Original Language: English
Sources
Mao Zedong, "On Practice" (1937)
https://en.wikiquote.org/wiki/Vladimir_Lenin
Mao Zedong, "On Practice" (1937)