叛而不讨,何以示威?服而不柔,何以示怀? 非威非怀,何以示德?· If a ruler does not punish his betrayers,how can he show dignity? If he does no favours to those who obey him,how can he show kindness? Without dignity and kindness,how can he show his virtues?
(Zuo Qiuming [of the Spring and Autumn Period]:Zuo's Commentary)