When the leader is morally weak and his discipline not strict, when his instructions and guidance are not enlightened, when there are no consistent rules, neighboring rulers will take advantage of this.

What is of the greatest importance in war is extraordinary speed: One cannot afford to neglect opportunity.

Appear at points which the enemy must hasten to defend; march swiftly to places where you are not expected.

Bestow rewards without regard to rule, issue orders without regard to previous arrangements; and you will be able to handle a whole army as though you had to do with but a single man.

All wars are won or lost before they are ever fought.

Every battle is won before it is fought.

Spies are a most important element in water, because on them depends an army's ability to move.