Until death itself comes, no calamity need be feared
There are routes not to be followed, armies not to be attacked, citadels not to be besieged, territory not to be fought over.
The nature of war is constant change.
Making no mistakes is what establishes the certainty of victory, for it means conquering an enemy that is already defeated.
Know the enemy and know yourself.
There is no instance of a nation benefiting from prolonged warfare.