十三年前,江晓原邀我为他的《天学真原》一书写一篇序。我在当时所写的序言中就提到,他的这种做法按照当时(乃至现在)的标准来看,是很反常规的。因为人们往往邀请“名人”为自己的著作写序,而我当时只不过是大学里的一名普通讲师,只是曾与他是中国科学院研究生院科学史专业的同 Thirteen years ago, Jiang Xiaoyuan invited me to write a preface to his book, The Original Cause of Heaven. As I mentioned in the preface I wrote at the time, his practice, as it stood at the time (and now), was very unconventional. Because people often invite “celebrities” to write their own writings, and I was only an ordinary lecturer at the university, but with him and the history of science in the Graduate School of the Chinese Academy of Sciences