当一件事情足够重要时，即便缺乏胜算，你也要去做。

A mathematical proof is a poem written in the language of logic.

The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends， and the other begins？

现代采石要求我们同时成为地质学家、生态学家和社区外交官。

现在是唯一没有尽头的东西。