If fighting is sure to result in victory, then you must fight, even though the ruler forbid it; if fighting will not result in victory, then you must not fight even at the ruler's bidding.
Sun TzuWhen I have won a victory I do not repeat my tactics but respond to circumstances in an infinite variety of ways.
Sun TzuThose who do not know the plans of competitors cannot prepare alliances. Those who do not know the lay of the land cannot maneuver their forces. Those who do not use local guides cannot take advantage of the ground.
Sun Tzu