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

阅读是共情的基础。

There are no hard distinctions between what is real and what is unreal, nor between what is true and what is false. A thing is not necessarily either true or false; it can be both true and false.

可持续发展不是一种选择，而是生存的必要条件。