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What readers marked in Sun Tzu's books
It is through the information brought by the converted spy that we are able to acquire and employ local and inward spies. It is owing to his information, again, that we can cause the doomed spy to carry false tidings to the enemy.
Knowledge of the enemy's dispositions can only be obtained from other men. Hence the use of spies, of whom there are five classes: (I) Local spies. (2) Inward spies. (3) Converted spies. (4) Doomed spies. (5) Surviving spies.
Move not unless you see an advantage; use not your troops unless there is something to be gained; fight not unless the position is critical.
When in desperate straits, soldiers lose the sense of fear. If there is no place of refuge, they will stand firm. If they are in hostile country, they will show a stubborn front. If there is no help for it, they will fight hard.
Read Sun Tzu and keep what you find.
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