The past is a foreign country; they do things differently there.
过去是一个陌生的国度；那里的人做事方式不同。
Those who dream by day are cognizant of many things which escape those who dream only by night.
电脑是工具，而不是思考的替代品。
只有比别人更努力，才能比别人更成功。
计算机科学的挑战在于弥合理论模型与实际应用之间的差距。