Keep their friends close and their enemies closer.
Quickness is the essence of the war.
If you fight with all your might, there is a chance of life; where as death is certain if you cling to your corner
Correct your mistake as soon as you have found it.
Of old the expert in battle would first make himself invincible and then wait for his enemy to expose his vulnerability.
Prohibit the taking of omens, and do away with superstitious doubts. Then, until death itself comes, no calamity need be feared.