研究历史,有两点是必须做到的:一是尊重客观事实,二是具体问题具体分析。这两点其实是一回事,因为客观事实本身是复杂而充满矛盾的。如果把事情看得很简单,不进行具体分析,就很难做到符合客观事实。杨奎松同志这部研究毛泽东和莫斯科关系的著作,选择的是一个人们普遍关心而过去又缺乏系统论述的重要课题。它的突出优点是:作者肯花大力气去钻研那些丰富而又庞杂的原始资料,力求把这段历史的全部 Study of history, there are two things that must be done: First, respect for objective facts, and second, specific analysis of specific issues. These two points are actually the same thing because the objective facts themselves are complex and full of contradictions. If we look at things in a very simple way and do not carry out any specific analysis, we will hardly be able to meet the objective facts. Comrade Yang Kui-song’s book on the study of relations between Mao Zedong and Moscow chose an important topic that people generally care about and lacked a systematic exposition in the past. Its outstanding merit is that the author is willing to devote himself to studying the rich and complex original materials, and strives to put all this history