Some oldies, but goodies
A: East Germany - the Communist Manifesto, West Germany - Capital.
Q: Is Communism a science?
A: No, if it were, they would have tried it on dogs first.
A lecturer is saying that Communism is on the horizon. Someone asks: What is the horizon?
The lecturer answers, it's an imaginary line where heaven meets earth, and which constantly moves away from us as we try to get closer to it.