Be subtle! be subtle! and use your spies for every kind of business.
War is a matter of vital importance to the state; the province of life or death; the road to survival or ruin. It is mandatory that it be thoroughly studied.
Making no mistakes is what establishes the certainty of victory, for it means conquering an enemy that is already defeated.
Appear weak when you are strong, and strong when you are weak.
Weigh the situation, then move.
Defeat the enemies strategy.