War is a matter of vital importance to the state.

If the enemy has occupied them before you, do not follow him, but retreat and try to entice him away.

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.

Those who do not know the plans of competitors cannot prepare alliances. Those who do not know the lay of the land cannot maneuver their forces. Those who do not use local guides cannot take advantage of the ground.

When the enemy is relaxed, make them toil. When full, starve them. When settled, make them move.

In warfare, first lay plans which will ensure victory, and then lead your army to battle; if you will not begin with stratagem but rely on brute strength alone, victory will no longer be assured.

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