Page:Sun Tzu on The art of war.djvu/164

Rh 20. These are six ways of courting defeat,
 * 1) 

which must be carefully noted by the general who has attained a responsible post.

21. The natural formation of the country is the soldier’s best ally;

but a power of estimating the adversary,

of controlling the forces of victory,

and of shrewdly calculating difficulties, dangers and distances,