Rapidity is the essence of war.
Pretend to be weak, so your enemy may grow arrogant.
One defends when his strength is inadequate, he attacks when it is abundant.
Without subtle ingenuity of mind, one cannot make certain of the truth of their reports.
It is only the enlightened ruler and the wise general who will use the highest intelligence of the army for the purposes of spying, and thereby they achieve great results.
To maintain an army at a distance causes the people to be impoverished.