"To fight and conquer in all your battles is not supreme excellence; supreme excellence consists in breaking the enemy's resistance without fighting."

"If the enemy is in the habit of using spies, send your own to deceive them."

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

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

"Appear at points which the enemy must hasten to defend; march swiftly to places where you are not expected."