" A sovereign cannot raise an army because he is enraged, nor can a general fight because he is resentful. For while an angered many may again be happy, and a resentful man again be pleased, a state that has perished cannot be restored, nor can the dead be brought back to life.

Therefore, the enlightened ruler is prudent and the good general is warned against rash action. Thus the state is kept secure and the army preserved. "

― Sun Tzu , The Art of War