《论衡·卷二十三·薄葬篇》
如果辩士、文人论证人死无知确有根据，就像墨家用杜伯变鬼的例子来论证人死有知一样，那么人死无知的真实情况就可以明白，薄葬节省财物的教化就可以树立了。
辩士文人有效验，若墨家之以杜伯为据，则死无知之实可明，薄葬省财之教可立也。
If the argument that the dead are ignorant has a real basis in the argument of debaters and literary men, just as the Mohists use the example of Du Bo becoming a ghost to prove that the dead are knowledgeable, then the truth about the dead being ignorant can be understood, and the teaching of frugal burial and saving money can be established.