分布式系统是指一个系统中，即使是你不知道存在的计算机发生故障，也可能导致你自己的计算机无法使用。

作家的任务是让不可见的事物变得可见。

The more you learn, the more you know. The more you know, the more you forget. The more you forget, the less you know. So why bother to learn?

The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

The world is full of obvious things which nobody by any chance ever observes.

我可残酷，但不可无良心；我可用语言的利剑来刺戳她，但决不用真刃。