So in war, the way is to avoid what is strong, and strike at what is weak.

Should 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.

Plan for what is difficult while it is easy, do what is great while it is small.

Ultimate excellence lies not in winning every battle, but in defeating the enemy without ever fighting.

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.

If, however, you are indulgent, but unable to make your authority felt; kind-hearted, but unable to enforce your commands; and incapable, moreover, of quelling disorder: then your soldiers must be likened to spoilt children; they are useless for any practical purpose.

Appear weak when you are strong, and strong when you are weak.