It is essential to seek out enemy agents who have come to conduct espionage against you and to bribe them to serve you. Give them instructions and care for them. Thus doubled agents are recruited and used.

Attack is the secret of defense; defense is the planning of an attack.

Peace proposals unaccompanied by a sworn covenant indicate a plot.

Like the sun and moon, they end but to begin anew; like the four seasons, they pass away to return once more.

This does not mean that the enemy is to be allowed to escape. The object is to make him believe that there is a road to safety, and thus prevent his fighting with the courage of despair. After that, you may crush him.

First learn to become invincible, then wait for your enemy's moment of vulnerability.

All men can see these tactics whereby I conquer, but what none can see is the strategy out of which victory is evolved.