1. Friedrich Engels once said, and I paraphrase that “When we examined the nature and deliberate the history of mankind, or our own intellectual activity, first unfolded in front of our eyes, is a picture which has various relation and interacted on an endless of entanglement.世界上的一切事物都处于普遍联系之中，其中没有任何一个事物孤立的存在，整个世界就是一个普遍联系的统一整体...
1. When we examined the nature or deliberate history of mankind, or our own intellectual activity, first unfolded in front of our eyes, is a picture by various relation and interac...
