每一次挫折都是为了卷土重来。

The concept of law is essentially a matter of social fact.

我们不是从祖先那里继承了地球，而是从子孙那里借来的。

科学中最重要的不是技术，而是你提出的问题。

The goal of synthesis should be to make molecules as easily as possible, not just possible.