McKennai
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- May 28, 2020
XIII. THE USE OF SPIES
1. Sun Tzu said: Raising a host of a hundred thousand men and marching them great distances entails heavy loss on the
people and a drain on the resources of the State. The daily expenditure will amount to a thousand ounces of silver.
There will be commotion at home and abroad, and men will drop down exhausted on the highways.
As many as seven hundred thousand families will be impeded in their labor.
2. Hostile armies may face each other for years, striving for the victory which is decided in a single day. This being so, to
remain in ignorance of the enemy's condition simply because one grudges the outlay of a hundred ounces of silver in
honors and emoluments,
is the height of inhumanity.
3. One who acts thus is no leader of men, no present help to his sovereign, no master of victory.
4. Thus, what enables the wise sovereign and the good general to strike and conquer, and achieve things beyond the
reach of ordinary men, is FOREKNOWLEDGE.
[That is, knowledge of the enemy's dispositions, and what he means to do.]
5. Now this foreknowledge cannot be elicited from spirits; it cannot be obtained inductively from experience,
[Tu Mu's note is: "[knowledge of the enemy] cannot be gained by reasoning from other analogous cases."]
nor by any deductive calculation.
[Li Chùan says: "Quantities like length, breadth, distance and magnitude, are susceptible of exact mathematical
determination; human actions cannot be so calculated."]
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.
[Cromwell, one of the greatest and most practical of all cavalry leaders, had officers styled 'scout masters,'
whose business it was to collect all possible information regarding the enemy, through scouts and spies, etc., and much
of his success in war was traceable to the previous knowledge of the enemy's moves thus gained."
[1] ]
9. Having LOCAL SPIES means employing the services of the inhabitants of a district.
[Tu Mu says: "In the enemy's country, win people over by kind treatment, and use them as spies."]
10. Having INWARD SPIES, making use of officials of the enemy.
11. Having CONVERTED SPIES, getting hold of the enemy's spies and using them for our own purposes.
12. Having DOOMED SPIES, doing certain things openly for purposes of deception, and allowing our spies to know of them
and report them to the enemy.
13. SURVIVING SPIES, finally, are those who bring back news from the enemy's camp.
14. Hence it is that which none in the whole army are more intimate relations to be maintained than with spies.
1. Sun Tzu said: Raising a host of a hundred thousand men and marching them great distances entails heavy loss on the
people and a drain on the resources of the State. The daily expenditure will amount to a thousand ounces of silver.
There will be commotion at home and abroad, and men will drop down exhausted on the highways.
As many as seven hundred thousand families will be impeded in their labor.
2. Hostile armies may face each other for years, striving for the victory which is decided in a single day. This being so, to
remain in ignorance of the enemy's condition simply because one grudges the outlay of a hundred ounces of silver in
honors and emoluments,
is the height of inhumanity.
3. One who acts thus is no leader of men, no present help to his sovereign, no master of victory.
4. Thus, what enables the wise sovereign and the good general to strike and conquer, and achieve things beyond the
reach of ordinary men, is FOREKNOWLEDGE.
[That is, knowledge of the enemy's dispositions, and what he means to do.]
5. Now this foreknowledge cannot be elicited from spirits; it cannot be obtained inductively from experience,
[Tu Mu's note is: "[knowledge of the enemy] cannot be gained by reasoning from other analogous cases."]
nor by any deductive calculation.
[Li Chùan says: "Quantities like length, breadth, distance and magnitude, are susceptible of exact mathematical
determination; human actions cannot be so calculated."]
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.
[Cromwell, one of the greatest and most practical of all cavalry leaders, had officers styled 'scout masters,'
whose business it was to collect all possible information regarding the enemy, through scouts and spies, etc., and much
of his success in war was traceable to the previous knowledge of the enemy's moves thus gained."
[1] ]
9. Having LOCAL SPIES means employing the services of the inhabitants of a district.
[Tu Mu says: "In the enemy's country, win people over by kind treatment, and use them as spies."]
10. Having INWARD SPIES, making use of officials of the enemy.
11. Having CONVERTED SPIES, getting hold of the enemy's spies and using them for our own purposes.
12. Having DOOMED SPIES, doing certain things openly for purposes of deception, and allowing our spies to know of them
and report them to the enemy.
13. SURVIVING SPIES, finally, are those who bring back news from the enemy's camp.
14. Hence it is that which none in the whole army are more intimate relations to be maintained than with spies.