历史首先是那个遗产的创造和记录；进步是其日益增长的丰富性、保存、传递和使用。
History is, above all else, the creation and recording of that heritage; progress is its increasing abundance, preservation, transmission, and use.
The challenge in computer science is to bridge the gap between the theoretical models and practical applications.
——2004年在南京航空学院上的演讲
言论自由只有在政府认为它自身安全的时候才存在。
I always try to find a lesson in every situation.