"The past is never dead. It's not even past."
The concept of law is essentially a matter of social fact.
比开始某事并失败更糟糕的是根本不开始。
Collaboration across nations is key to preserving marine ecosystems.
每一首歌都是我日记的一部分。
在数学中，最简单的问题往往导致最深刻的发现。
不沉溺于过去，专注未来。