《笑林广记·腐流部》
有两个道学先生观点不同，都说自己是真道学，别人是假道学，争论不休，于是请孔子给判断一下。
两道学先生议论不合，各自诧真道学而互诋为假，久之不决，乃请证于孔子。
Two Confucian scholars have different views, both claiming that they are true Confucians and the others are false Confucians. They argued endlessly, so they invited Confucius to judge them.