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

The design of algorithms is both an art and a science.

在采矿业，安全不仅仅是政策 - 它是个人问题。

【释义】（即使是非常容易生长的东西）暴晒它一天，冰冻它十天，也不可能生长的。劝诫人做事需有始有终、专心致志。