In Russia itself the proletariat conquered in spite of the fact that there was no Soviet State in existence at the time elsewhere. For the victory are necessary, not only certain objective conditions, internal as well as external, but also certain subjective factors - the Party, the leadership, the strategy.
Leon TrotskySimultaneously the Left Opposition in the course of several years carried on a struggle against the Stalinists in favor of collectivization.
Leon TrotskyCan and must! The proclamation of this new conception of [Joseph Stalin] is closed by the same words, "Such are in general the characteristic features of Lenin's conception of the proletarian revolution." In the course of a single year Stalin ascribed to [Vladimir] Lenin two directly opposed conceptions of the fundamental question of socialism. The first version represents the real tradition of the party; the second took shape in Stalin's mind only after the death of Lenin, in the course of the struggle against "Trotskyism".
Leon Trotsky