Tsze-kung asked, saying, "Is there one word which may serve as a rule of practice for all one's life?" The Master said, "Is not RECIPROCITY such a word? What you do not want done to yourself, do not do to others."
Do not utter even a single harsh word; your True Lord and Master abides in all. Do not break anyone's heart; these are all priceless jewels. The minds of all are like precious jewels; to harm them is not good at all. If you desire your Beloved, then do not break anyone's heart.