You can prevent your opponent from defeating you through defense, but you cannot defeat him without taking the offensive.
Correct your mistake as soon as you have found it.
When you surround an army, leave an outlet free. Do not press a desperate foe too hard.
The quality of decision is like the well-timed swoop of a falcon which enables it to strike and destroy its victim.
When he pretends to flee, do not pursue.
All warfare is based on deception. There is no place where espionage is not used. Offer the enemy bait to lure him.