It is according to the shapes that I lay the plans for victory, but the multitude does not comprehend this. Although everyone can see the outward aspects, none understands the way in which I have created victory.

Know thy self, know thy enemy. A thousand battles, a thousand victories.

If this is long delayed, weapons are blunted and morale depressed.

When he utilizes combined energy, his fighting men become, as it were, like rolling logs or stones... The energy developed by good fighting men is as the momentum of a round stone rolled down a mountain thousands of feet in height.

The good fighter is able to secure himself against defeat, but cannot make certain of defeating the enemy.

Should the enemy forestall you in occupying a pass, do not go after him if the pass is fully garrisoned, but only if it is weakly garrisoned.

Invincibility depends on one's self; the enemy's vulnerability on him.