Hence that general is skilful in attack whose opponent does not know what to defend; and he is skilful in defense whose opponent does not know what to attack.

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.

According to my assessment, even if you have many more troops than others, how can that help you to victory?

Build your opponent a golden bridge to retreat across.

Hence the saying: One may know how to conquer without being able to do it.

Appraise war in terms of the fundamental factors. The first of these factors is moral influence.

Ground which can be freely traversed by both sides is called accessible.