Marx's judgment about the essence of mankind being the sum of all social relations is a very important logical starting point of humanities and social science research.
马克思关于人的本质是一切社会关系的总和的论断是人文社会科学研究的一个十分重要的逻辑起点。
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Sun Jian:When you talk with your friends about some issue, you can learn to sum up the issue into two or three points. Through this kind of regular exercise, you can make your thinking more logical.