"Permanent revolution" calls Leon Trotsky's name to mind as surely as "relativity" does the name of Albert Einstein. In their originality and scope, these two famous theories have a symmetry.
Leon Trotsky was a leading Bolshevik revolutionary and Marxist theorist. He was a central leader of the Russian revolution and an influential politician in the early years of the Soviet Union. He was Commissar for Foreign Affairs, founder and commander of the Red Army and Commissar for War.
He led the struggle against Stalin's bureaucratization of the Soviet Union in the 1920s. Trotsky was expelled from the Communist Party and deported from the Societ Union in the Great Purge.
As the founder of the Fourth International, he continued in exile to encourage workers and oppressed peoples to unite against capitalism, and for socialist revolution.