《庄子·杂篇·庚桑楚》
心神离散而不能返归的人，就会像鬼一样只有形骸；心神离散而有所得，可以说他在精神上已经死了。
故出而不反，见其鬼。出而得，是谓得死。
People whose hearts are scattered and cannot return will be like ghosts, with only their bodies, while people whose hearts are scattered and have gained something can be said to be spiritually dead.