WEAK POINTS AND STRONG

 1. Sun Tzu said: Whoever is first in the field and
  awaits the coming of the enemy, will be fresh for the fight;
  whoever is second in the field and has to hasten to battle
  will arrive exhausted.

 2. Therefore the clever combatant imposes his will on
  the enemy, but does not allow the enemy's will to be imposed on him.

 3. By holding out advantages to him, he can cause the enemy
  to approach of his own accord; or, by inflicting damage,
  he can make it impossible for the enemy to draw near.

 4. If the enemy is taking his ease, he can harass him;
  if well supplied with food, he can starve him out;
  if quietly encamped, he can force him to move.

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