What is of the greatest importance in war is extraordinary speed: One cannot afford to neglect opportunity.

As water shapes its flow in accordance with the ground, so an army manages its victory in accordance with the situation of the enemy.

Quickness is the essence of the war.

At first, then, exhibit the coyness of a maiden, until the enemy gives you an opening; afterwards emulate the rapidity of a running hare, and it will be too late for the enemy to oppose you.

Attack where he is unprepared; sally forth when he does not expect you.

Therefore the skillful leader subdues the enemy's troops without any fighting; he captures their cities without laying siege to them; he overthrows their kingdom without lengthy operations in the field.

Weak leadership can wreck the soundest strategy; forceful execution of even a poor plan can often bring victory.