Invincibility is in oneself, and vulnerability is in the opponent. Invincibility is a matter of defense, vulnerability is a matter of attack. Therefore skillful warriors are able to be invincible, but they cannot cause opponents to be vulnerable. That is why it is said that victory is discerned and not manufactured.

With regard to ground of this nature, be before the enemy in occupying the raised and sunny spots, and carefully guard your line of supplies. Then you will be able to fight with advantage.

The consummate leader cultivates the moral law, and strictly adheres to method and discipline; thus it is in his power to control success.

Know the enemy and know yourself; in a hundred battles you will never peril.

If you fight with all your might, there is a chance of life; where as death is certain if you cling to your corner

Know thy enemy and know thy self and you will win a hundred battles.

One who speaks deferentially but increases his preparations will advance. One who speaks belligerently and advances hastily will retreat.