Carefully compare the opposing army with your own, so that you may know where strength is superabundant and where it is deficient.

Strategy without tactics is the slowest route to victory. Tactics without strategy is the noise before defeat.

The military has no constant form, just as water has no constant shape - adapt as you face the enemy, without letting them know beforehand what you are going to do.

In the tumult and uproar, the battle seems chaotic, but there is no disorder, the troops appear to be milling about in circles but cannot be defeated.

Therefore I say: 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, your chances of winning or losing are equal. If ignorant both of your enemy and of yourself, you are certain in every battle to be in peril.

I will be able to forecast which side will be victorious and which defeated.

Opportunities multiply as they are seized.