When Duke Ding of Teng died, the crown prince (later Duke Wen of Teng) said to his minister Ran You: “Years ago, Mencius taught me in Song, and his words have stayed with me ever since. Now I am so unfortunate as to have lost my father, I would like you to go and…
Mencius said: “Bo Yi would not serve a ruler he did not approve of, nor befriend anyone he deemed unworthy.”
Mencius said: “Is the arrow-maker really less humane than the armor-maker?”
Gongsun Chou asked Mencius, “If you should hold the power of government in Qi, could you achieve great deeds like Guan Zhong and Yanzi?”