《礼记·中庸》
居上位，不欺凌下级。在下位，不攀附上级。端正自己不苛求他人，这样就没有怨恨，对上不怨恨天命，对下不归咎别人。
在上位不陵下，在下位不援上，正己而不求于人，则无怨。上不怨天，下不尤人。
When the superior man occupies a high position, he does not allow his inferiors to make fools of him. When he occupies a low position, he does not cringe to his superiors. If he fails to find acceptance with men, he turns in upon himself and examines his motives. If he finds them right, he does not mind. He is anxious to do good, but he is not anxious to be known as a good man.