Ground which can be abandoned but is hard to re-occupy is called entangling.

What is of supreme importance in war is to attack the enemy's strategy.

An army may be likened to water, for just as flowing water avoids the heights and hastens to the lowlands, so an army avoids strength and strikes weakness.

When I have won a victory I do not repeat my tactics but respond to circumstances in an infinite variety of ways.

The clever combatant looks to the effect of combined energy, and does not require too much from individuals. Hence his ability to pick out the right men and utilize combined energy

Maneuvering with an army is advantageous; with an undisciplined multitude, most dangerous.

If you know neither the enemy nor yourself, you will succumb in every battle