众所周知，马克思主义诞生，使社会主义从空想变为科学。但是，世界历史演进的实际证明，此后的社会主义理论和社会主义实践，并没有因为有了马克思主义就自然地超越空想而上升为科学。在《共产党宣言》中，马克思、恩格斯曾经批判了一系列非科学的社会主义思潮。第一类是“反 It is well known that the birth of Marxism changed socialism from fantasy to science. However, the actual proof of the historical evolution of the world and the subsequent practice of socialist theory and socialism have not risen to science because of Marxism’s natural surpassing of fantasy. In the “Communist Manifesto,” Marx and Engels once criticized a series of unscientific socialist trends of thought. The first category is "anti