Who knows his enemy as he knows each other, in hundred fights will not be undone. Qui conna\xeet son ennemi comme il se conna\xeet, en cent combats ne sera point d\xe9fait.
Who knows each other but does not know the enemy will be victorious once on two. Qui se conna\xeet mais ne conna\xeet pas l'ennemi sera victorieux une fois sur deux.
Who does not know either his enemy or himself is always in danger. Qui ne conna\xeet ni son ennemi ni lui-m\xeame est toujours en danger.