Ground which can be abandoned but is hard to re-occupy is called entangling.

He will win who, prepared himself, waits to take the enemy unprepared.

He must be able to mystify his officers and men by false reports and appearances, and thus keep them in total ignorance.

All battles are won before they start.

Humble words and increased preparations are signs that the enemy is about to advance. Violent language and driving forward as if to the attack are signs that he will retreat.

First learn to become invincible, then wait for your enemy's moment of vulnerability.

If fighting is sure to result in victory, then you must fight.