If the enemy leaves a door open, you must rush in.
The rising of birds in their flight is the sign of an ambuscade. Startled beasts indicate that a sudden attack is coming.
Opportunities multiply as they are seized.
To conquer the enemy without resorting to war is the most desirable. The highest form of generalship is to conquer the enemy by strategy.
He will win who has military capacity and is not interfered with by the sovereign.
In making tactical dispositions, the highest pitch you can attain is to conceal them.