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

“The consummate leader cultivates the Moral Law, and strictly adheres to method and discipline; thus it is in his power to control success.”

“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.”

“For should the enemy strengthen his van, he will weaken his rear; should he strengthen his rear, he will weaken his van; should he strengthen his left, he will weaken his right; should he strengthen his right, he will weaken his left. If he sends reinforcements everywhere, he will everywhere be weak.”

“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.”

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