儿女对慈母的思念,不会因时光流逝而消减;人们对哺育过自己的母校,又何尝不是一往情深呢?摆在我面前的是一张精致的已显得陈旧的博士文凭。这是四十多年前美国意利诺大学研究院颁发给袁翰青的。将近半个世纪,虽屡经劫难,袁翰青还是一直将它珍藏着。不久前,这位七十六岁的中国科学院学部委员、 Children miss their benevolence, will not be diminished by the passing of time; people nurture their own alma mater, why not treat all one’s affection deep love? Before me is an exquisite old obsolete doctoral diploma. This is more than 40 years ago, the United States awarded the University of Illinois Research Institute Yuan Hanqing. Nearly half a century, despite repeated catastrophe, Yuan Hanqing has always kept it. Not long ago, the 76-year-old academician of the Chinese Academy of Sciences,