《论衡·卷十一·答佞篇》
名声大的佞人才智高超，他的行迹容易察觉；名声小的佞人才智低下，他的痕迹难于察觉。
大佞材高，其迹易察；小佞知下，其效难省。
Famous flatterers are highly intelligent, so their actions are easy to detect; unknown flatterers are less intelligent, so their actions are hard to detect.