《国语·晋语·惠公斩庆郑》
再说临战而自退，败退而自杀，臣下可以随心所欲，国君却失去了刑法的威严，以后又怎么用人作战。 
且战而自退，退而自杀；臣得其志，君失其刑，后不可用也。 
If we allow people to withdraw during battle and commit suicide in the event of defeat, the monarch will lose the authority of the law, and how can there be any motivation for people to fight in the future.