SUN-TZU says, “A ruler must not mobilize his armies in anger. A general must not engage the enemy in wrath. Anger can turn to joy, and wrath can turn to gladness. But once a state is destroyed, it cannot be restored. And once a person is dead, he cannot be reborn” (Suntzu Pingfa: 12.18–21). Sun-tzu also says, “To win every battle is not supreme exc

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