《庄子·外篇·田子方》
生有所萌发之处，死有所归往之地，始终相反没有边际，而不知其穷尽。
生有所乎萌，死有所乎归，始终相反乎无端，而莫知乎其所穷。
There is a place where life begins, there is a place to where death returns, the beginning and the end are opposite and boundless, but do not know its exhaustion.