1886-1961
Ten Theses on Marxism Today, 1950[]
№2: "all attempts to re-establish the Marxist doctrine as a whole in its original function as a theory of the working classes social revolution are reactionary utopias"
N4: "The first step in re-establishing a revolutionary theory and practice consists in breaking with that Marxism which claims to monopolize revolutionary initiative as well as theoretical and practical direction".