When you are ignorant of the enemy but know yourself, your chances of winning or losing are equal.

If you know neither the enemy nor yourself, you will succumb in every battle

Apparent confusion is a product of good order; apparent cowardice, of courage; apparent weakness, of strength.

He will win who, prepared himself, waits to take the enemy unprepared.

There are routes not to be followed, armies not to be attacked, citadels not to be besieged, territory not to be fought over.

The general who advances without coveting fame and retreats without fearing disgrace, whose only thought is to protect his country and do good service for his sovereign, is the jewel of the kingdom.

There is no place where espionage is not possible.