There are … 5 kinds of spy!
6. Knowledge of the enemy’s dispositions can only be
obtained from other men.
7. Hence the use of spies, of whom there are five classes:
(1) Local spies; (2) inward spies; (3) converted spies; (4)
doomed spies; (5) surviving spies.
8. When these five kinds of spy are all at work, none can
discover the secret system. This is called “divine manipulation
of the threads.” It is the sovereign’s most precious faculty.
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