History is merely a list of surprises. It can only prepare us to be surprised yet again.
The greatest question of our time is not communism versus individualism, not Europe versus America, not even the East versus the West; it is whether man can bear to live without God.
出生的那一刻是我们失去最多的时候。
系统辨识是从观测到的输入输出数据中建立动态系统数学模型的科学与艺术。