理解的提高有两个目标：首先，我们自己的知识增长；其次，使我们能够将这些知识传递给他人。
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
唯一的失败是不去尝试。
We're not trying to preach, we're just trying to teach.
Abstraction is the key to managing complexity in software systems.
舞台是我的家，观众是我的家人。
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。
Don't let anyone tell you that you can't do something.
The biggest advantage to winning the Nobel Prize is not having to worry about parking tickets.
