Against those skilled in attack, an enemy does not know where to defend; against the experts in defense, the enemy does not know where to attack.
Sun TzuThere are routes not to be followed, armies not to be attacked, citadels not to be besieged, territory not to be fought over.
Sun TzuIn warfare, there are no constant conditions. He who can modify his tactics in relation to his opponent will succeed and win.
Sun TzuOn dispersive ground, therefore, fight not. On facile ground, halt not. On contentious ground, attack not. On open ground, do not try to block the enemy's way. On the ground of intersecting highways, join hands with your allies. On serious ground, gather in plunder. In difficult ground, keep steadily on the march. On hemmed-in ground, resort to stratagem. On desperate ground, fight.
Sun Tzu