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Know your enemy and know yourself and you can fight a hundred battles without disaster.

If you know the enemy and know yourself you need not fear the results of a hundred battles.

It is better to conquer yourself than to win a thousand battles. Then the victory is yours. It cannot be taken from you, not by angels or by demons, heaven or hell.

Hence the saying: If you know the enemy and you know yourself, your victory will not stand in doubt; if you know Heaven and you know Earth, you may make your victory complete.

War its thousands slays, Peace its ten thousands.

The first step on the way to victory is to recognize the enemy.

Go forth a conqueror and win great victories.

You must not fight too often with one enemy, or you will teach him all your art of war.

One may know how to gain a victory, and know not how to use it.