Agitate him and ascertain the pattern of his movement.

If the enemy opens the door, you must race in.

Thus those skilled in war subdue the enemy's army without battle .... They conquer by strategy.

It is through the dispositions of an army that its condition may be discovered. Conceal your dispositions, and your condition will remain secret, which leads to victory,; show your dispositions, and your condition will become patent, which leads to defeat.

If we know that the enemy is open to attack, but are unaware that our own men are not in a condition to attack, we have gone only halfway towards victory.

The skilful employer of men will employ the wise man, the brave man, the covetous man, and the stupid man.

The peak efficiency of knowledge and strategy is to make conflict unnecessary.