学习的本质是意义的获得。
The essence of learning is the acquisition of meanings.
In a rapidly changing market, the only constant is customer needs.
波函数不是描述单个系统，而是描述系统的集合。
有时最深刻的发现来自于提出最简单的问题。
You are not only responsible for what you say, but also for what you do not say.
我们银河系的中心是一个极端物理学发生的迷人地方，能研究它是我的荣幸。