《黄帝内经·素问·解精微论》
黄帝在明堂里，雷公请教说：我接受了您传给我的医道，再教给我的学生，教的内容是经典所论，从容形法，阴阳刺灸，汤药所滋。然而他们在临症上，因有贤愚之别，所以未必能十全。
黄帝在明堂，雷公请曰：臣授业，传之行教以经论，从容形法，阴阳刺灸，汤药所滋，行治有贤不肖，未必能十全。
In the Mingtang, the Yellow Emperor asked Lei Gong: I have passed on my medical knowledge to you, and you have passed it on to your students. The content you teach is based on classics, including facial features, yin and yang, acupuncture and moxibustion, and herbal medicines. However, when treating patients, they may not be perfect due to differences in aptitude, so they may not be perfect.