“The supreme art of war is to subdue the enemy without fighting.” 
― Sun Tzu, The Art of War

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“Appear weak when you are strong, and strong when you are weak.” 
― Sun Tzu, The Art of War

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“If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.” 
― Sun Tzu, The Art of War