"All warfare is based on deception. Hence, when able to attack, we must seem unable;
when using our forces, we must seem inactive; when we are near, we must make the
enemy believe we are far away; when far away, we must make him believe we are near.
Hold out baits to entice the enemy. feign disorder, and crush him. If he is secure at all
points, be prepared for him. If his is in superior strength, evade him. If you opponent is of
choleric temper, seek to irritate him. Pretend to be weak, that he may grow arrogant.
If he is taking his ease, give him no rest. If his forces are united, separate them.
Attack him where he is unprepared, appear where you are not expected."

-Sun Tzu, The Art of War
 

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