Lu Yun offers an economic theory as to that. Harvard's development has always been closely related to the expansion of U.S. national power. Before World War Ⅱ Harvard was just a famous American university. It was not until the expansion of American power after the war that Harvard's reputation spread worldwide.
對於這點，陸雲則提出「經濟法則」：哈佛的發展本來就和美國國力的擴展息息相關；在第二次世界大戰前，哈佛只是美國的著名學府，第二次世界大戰後，隨著美國勢力的延伸，哈佛的名聲才傳至全世界。