The rule of recognition is the ultimate rule in a legal system, which identifies the criteria for valid law.

Overfishing will only deplete marine resources, we must take the path of green fisheries.

有些人特别善于了解自己的知识极限，因为他们必须这样做。

我们必须找到一种方式来庆祝我们的多样性并辩论我们的分歧，而不分裂我们的社区。