Subjugating the enemy's army without fighting is the true pinnacle of excellence.
The natural formation of the country is the soldier's best ally
All wars are won or lost before they are ever fought.
Carefully study the well-being of your men, and do not overtax them. Concentrate your energy and hoard your strength. Keep your army continually on the move, and devise unfathomable plans.
If ignorant both of your enemy and yourself, you are certain to be in peril.
These are the six ways of courting defeat - neglect to estimate the enemy's strength; want of authority; defective training; unjustifiable anger; nonobservance of discipline; failure to use picked men.