写作就是呼吸，就是生活，就是存在。

The challenge in computational learning theory is to understand the capabilities and limitations of learning algorithms.

The most basic human desire is to be recognized as a human being, and the most basic human fear is to be treated as less than human.

所谓智慧，就是拥有的问题比答案多。

我不相信永恒，但我相信痕迹。