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

“In respect of military method, we have, firstly, Measurement; secondly, Estimation of quantity; thirdly, Calculation; fourthly, Balancing of chances; fifthly, Victory.”

“Hence the saying: If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.”

“Security against defeat implies defensive tactics; ability to defeat the enemy means taking the offensive.”

“Let your rapidity be that of the wind, your compactness that of the forest.”

“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.”

“These are: (1) the Moral Law; (2) Heaven; (3) Earth; (4) the Commander; (5) method and discipline.”