Communism is at once a complete system of proletarian ideology and a new social system. It is different from any other ideological and social system, and is the most complete, progressive revolutionary and rational system in human history. The ideological and social system of feudalism has a place only in the museum of history. The ideological and social system of capitalism has also resembles "a dying person who is sinking fast, like the sun setting beyond the western hills", and will soon be relegated to the museum. The communist ideological and social system alone is full of youth and vitality, sweeping the world with the momentum of an avalanche and the force of a thunderbolt.