The concept of NP-completeness has provided a powerful tool for understanding the complexity of problems.

写作是理解世界的一种方式。

可持续性不是一种选择；它是我们共同的责任。

In the end, what matters is not the answers we find, but the questions we dare to ask.

When you judge another, you do not define them, you define yourself.

唯一的出路是向内走。