想见音容空有影,欲闻教诲杳无声.今年的6月28日,是我们的恩师、中国杰出的物理学家钱三强先生逝世一周年.许多人在思念他、追忆他、学习他.本刊编辑部除举行读者座谈会外.特将先生于1991年7月25日为清华大学教授郭奕玲、沈慧君所著《物理学史》题写的序言发表,以资纪念.标记为编者所加,特此说明. If you want to see the voices empty and want to hear the teachings of silence, June 28 this year is our mentor, the eminent physicist, Mr. Qian Sanqiang, the first anniversary of the death of many people miss him, recall him and learn from him. In addition to holding a symposium for readers, Special Press will publish a preface to the inscription entitled “History of Physics” written by Guo Yiling and Shen Huijun, professors of Tsinghua University on July 25, 1991, in honor of the editor. Hereby explain.