Progress is impossible without change, and those who cannot change their minds cannot change anything.

阅读未见过的书，如结识好朋友，情意和洽；重读已看过的书，如老朋友相晤，叙旧联谊。

The world is a very complicated place, and it's not always easy to understand what's happening around us.

色散理论是连接量子力学的抽象形式与我们观察到的具体现象之间的桥梁。

A teacher who is attempting to teach without inspiring the pupil with a desire to learn is hammering on cold iron.

我想揭示大自然的秘密，用来造福人类。我认为，在我们的短暂一生中，最好的贡献莫过于此了。