免疫系统就像一把双刃剑；它可以对抗癌症，但也需要被控制。

最终，我们记住的不是敌人的话语，而是朋友的沉默。

"The heart has reasons that reason does not understand."

The most important skill for an economist is the ability to think clearly about trade-offs.

故事不是谎言，但也不是真相。

大胆梦想，努力工作，永不放弃。

You can't knock on opportunity's door and not be ready.