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

There is nothing more difficult than tactical maneuvering. The difficult consists in turning the devious into the direct, and misfortune into gain. Thus, to take a long and circuitous route after enticing the enemy out of the way, and though starting after him to contrive to reach the goal before him, shows knowledge of the artifice of deviation.

Build your opponent a golden bridge to retreat across.

Rapidity is the essence of war.

Wait by the river long enough and the body of your enemy will float by you.

Weigh the situation, then move.

Hiding order beneath the cloak of disorder is simply a question of subdivision; concealing courage under a show of timidity presupposes a fund of latent energy; masking strength with weakness is to be effected by tactical dispositions.