“No ruler should put troops into the field merely to gratify his own spleen; no general should fight a battle simply out of pique…Anger may in time change to gladness; vexation may be succeeded by content.” (主不可以怒而兴师，将不可以愠而致战…怒可以复喜，愠可以复悦). In the Chinese, 怒goes with this character meaning _.