《论衡·卷五·感虚篇》
照这样说，奇怪现象的出现，是灾祸要到来的凶兆，而不是想害自己的人造成的。
由此言之，妖怪之至，祸变自凶之象，非欲害己者之所为也。
According to this, the occurrence of strange phenomena is a terrible sign that the disaster is coming, rather than being caused by someone who wants to harm himself.