When your opponent gives you an opening, be swift as a hare.

Hiding order beneath the cloak of disorder is simply a question of subdivision; concealing courage under a show of timidity presupposes a fund of latent energy; masking strength with weakness is to be effected by tactical dispositions.

Therefore, to estimate the enemy situation and to calculate distances and the degree of difficulty of the terrain so as to control victory are virtues of the superior general.

A sovereign of high character and intelligence must be able to know the right man, should place the responsibility on him, and expect results.

To know your Enemy, you must become your Enemy.

Those whose upper and lower ranks have the same desire are victorious.

He who knows his enemy and himself well will not be defeated easily.