There is an old saying:
"It is better to become the passive
in order to see what will happen.
It is better to retreat a foot
than to advance only an inch."

This is called
being flexible while advancing,
pushing back without using force,
and destroying the enemy without engaging him.

There is no greater disaster
than underestimating your enemy.
Underestimating your enemy
means loosing your greatest assets.
When equal forces meet in battle,
victory will go to the one
that enters with the greatest sorrow.