The heart is a strange thing. It can be broken and still keep beating.

The most controversial thing I have ever done is to stick around.

我不是女人，也不是男人，我是你永远无法理解的存在。

我们被要求的不是成功，而是忠诚。

We are not in the coffee business serving people, but in the people business serving coffee.

In the context of computational learning, the concept of 'probably approximately correct' (PAC) learning provides a framework for understanding the efficiency and feasibility of learning algorithms.