出自《周易·系辞》，杨国荣在著作中阐释其哲学意义

教育是可持续林业实践的基础。

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.

历史学家的任务是理解过去，而小说家的任务是让它活过来。