There are routes not to be followed, armies not to be attacked, citadels not to be besieged, territory not to be fought over.

If their forces are substantial, prepare for them; if their forces are strong, avoid them.

If you know yourself but not the enemy, for every victory gained you will also suffer a defeat.

The rising of birds in their flight is the sign of an ambuscade. Startled beasts indicate that a sudden attack is coming.

Therefore a victorious army first wins and then seeks battle; a defeated army first battles and then seeks victory.

When the general is weak and without authority; when his orders are not clear and distinct; when there are no fixed duties assigned to officers and men, and the ranks are formed in a slovenly haphazard manner, the result is utter disorganization.

What the ancients called a clever fighter is one who not only wins, but excels in winning with ease.