“You can be sure of succeeding in your attacks if you only attack places which are undefended.You can ensure the safety of your defence if you only hold positions that cannot be attacked.”

“You can ensure the safety of your defense if you only hold positions that cannot be attacked.”

“You can be sure of succeeding in your attacks if you only attack places which are undefended.”

“A clever general, therefore, avoids an army when its spirit is keen, but attacks it when it is sluggish and inclined to return. This is the art of studying moods.”

“It is a matter of life and death, a road either to safety or to ruin. Hence it is a subject of inquiry which can on no account be neglected.”

“Do not repeat the tactics which have gained you one victory, but let your methods be regulated by the infinite variety of circumstances.”

“Knowledge of the enemy's dispositions can only be obtained from other men.”