《论衡·卷二十·论死篇》
如果人们看到的鬼都像死人的样子，那还可以怀疑是死人变成了鬼，然而有人看到的鬼都像活人的形状。
人见鬼也，皆象死人形，则可疑死人为鬼，或反象生人之形。
If the ghosts people see all look like dead people, then it is possible to suspect that the dead have become ghosts. However, the ghosts some people see all look like living people.