All warfare is based on deception. Therefore, when capable, feign incapacity; when active, inactivity. When near, make it appear that you are far away; when far away, that you are near. Offer the enemy a bait to lure him; feign disorder and strike him. When he concentrates, prepare against him; where he is strong, avoid him. Anger his general(s) and confuse him. Pretend inferiority and encourage his arrogance. Keep him under strain and wear him down. When he is united, divide him. Attack where he is unprepared; sally out when he does not expect you. To subdue the enemy without fighting is the supreme skill Disrupt his alliances " Therefore I say: [If you] know the enemy and know yourself, in a hundred battles you will never be in peril. When you are ignorant of the enemy but know yourself, you chances of winning or losing are equal; if ignorant of both your enemy and yourself, you are certain in every battle to be in peril.