《论衡·卷六·福虚篇》
现在则不是这样，惠王硬吃下有害自己的东西，让管理膳食的臣子不知道自己的过错，失去了统治臣民的威严，可见没有制止错误的意思，这是不贤明之一。
今则不然，强食害己之物，使监食之臣不闻其过，失御下之威，无御非之心，不肖一也。
Now it is not like this: King Hui would force himself to swallow something harmful to him, not letting the steward in charge of food know of his faults, and lost the sovereign power to rule the ministers. Thus it is evident that he did not extinguish the wrong ideas, which is one of the signs of unwise rule.