父生之,師教之,君食之,非父不生,非食不長,非教不知生之族也,故壹事之。《國語·晉語一》


(paraphrased translation) Parents give us lives; professors provide us with education; and employers bestow us with job opportunities. Without parents we cannot be born, without income we cannot survive, and without education we cannot know our community. Therefore, we respect all of them wholeheartedly. (Discourses of Jin, Guoyu, ~4th century BC)