"Time is the thing that keeps everything from happening at once."
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。
The past is a ghost, the future a dream, and the present a fleeting moment.
Fame is not the most important thing in life. The most important thing is to be happy.
"The magic of reading is that it allows us to live a thousand lives."