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.
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.
When your army has crossed the border, you should burn your boats and bridges, in order to make it clear to everybody that you have no hankering after home.
When one treats people with benevolence, justice, and righteoousness, and reposes confidence in them, the army will be united in mind and all will be happy to serve their leaders.
There are roads which must not be followed, armies which must not be attacked, towns which must not be besieged, positions which must not be contested, commands of the sovereign which must not be obeyed.
Those skilled at making the enemy move do so by creating a situation to which he must conform; they entice him with something he is certain to take, and with lures of ostensible profit they await him in strength.
