許衡(1209-1282)，字仲平，河內（今河南沁陽）人，世稱魯齋先生。受程朱理學引孔說孟的影響，許衡繼志述事，曾對世祖之問而曰「學孔子」，也自言責善於君，乃宗孟子之教。今爬梳《魯齋遺書》、《魯齋全書》、《魯齋心法》中許衡提到孔孟學說的部分，並試圖從詮釋中得知其人對孔孟遺教的奉行與宣揚。

Xu Heng (1209-1282), character Zhong pin, Hanoi (now Henan), people call him Mr. Lu Chai. Cheng the Zhu Neo-Confucianism and Confucius and Mencius theory the influence, Xu Heng the will states the matter, once to the world ancestor asked said ”learns from Confucius”, also admits the responsibility to be good at Emperor, was teaching of the ancestor Mencius. Now puts in order ”Lu Room Posthumous writings”, ”Lu Chaich'uan the Book, Lu Chaihsin the Law” center Xu Heng mentioned the Confucius and Mencius theory the part, and attempts from the annotation to know it with publicizes to Confucius and Mencius legacy of teachings carrying out.