To secure ourselves against defeat lies in our own hands, but the opportunity of defeating the enemy is provided by the enemy himself.

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  Rely not on the likelihood of the enemy’s not coming, but on your own readiness to receive him.

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  Advance where no one can stop you; retreat where you cannot be overtaken.

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  In all fighting, the direct method may be used for joining battle, but indirect methods will be needed in order to secure victory.

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  A good army first makes itself invincible, and then waits for the moment when the enemy can be defeated.

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  Many calculations lead to victory, and few calculations to defeat: how much more no calculation at all!

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  Do not repeat the tactics which have gained you one victory, but let your methods be regulated by the infinite variety of circumstances.

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