Therefore, just as water retains no constant shape, so in warfare there are no constant conditions.
Sun TzuAt first, then, exhibit the coyness of a maiden, until the enemy gives you an opening; afterwards emulate the rapidity of a running hare, and it will be too late for the enemy to oppose you.
Sun TzuDo not swallow bait offered by the enemy. Do not interfere with an army that is returning home.
Sun TzuShould the enemy forestall you in occupying a pass, do not go after him if the pass is fully garrisoned, but only if it is weakly garrisoned.
Sun Tzu