"When you surround an army, leave an outlet free. Do not press a desperate foe too hard."

"Know the ground, know the weather; your victory will then be complete."

"The highest form of generalship is to balk the enemy's plans."

"When the enemy is at ease, be able to weary him; when well fed, to starve him; when at rest, to make him move."

"Never venture on a campaign until you have made your preparations in every respect."