Those who are really convinced that they have made progress in science would not demand freedom for the new views to continue side by side with the old, but the substitution of the new views for the old.
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About Vladimir Lenin
Vladimir Lenin was leader of the soviet union from 1922 to 1924. Vladimir Ilyich Ulyanov, better known as Vladimir Lenin, was a Russian revolutionary, politician and political theorist. He was the first head of government of Soviet Russia from 1917 until his death in 1924 and of the Soviet Union from 1922 until his death. Read more on Wikipedia →