We suggest you turn to the Tao Teh Ching:
79 After a bitter quarrel, some resentment must remain. What can one do about it? Therefore the sage keeps his half of the bargain But does not exact his due. A man of Virtue performs his part, But a man without Virtue requires others to fulfill their obligations. The Tao of heaven is impartial. It stays with good men all the time. -- tr. Feng