定义就是限制。

理解密码学的关键在于理解它不仅仅是关于保守秘密，而是关于管理信任。

People ask me how I make music. I tell them I just step into it. It’s like stepping into a river and joining the flow. Every moment in the river has its song.

Collaboration is the root of progress in forestry—no single entity can solve the challenges alone.

自然在其现象中向我们展示了一条不间断的类比链。