The King is only fond of words, and cannot translate them into deeds.

So a military force has no constant formation, water has no constant shape: the ability to gain victory by changing and adapting according to the opponent is called genius.

As water shapes its flow in accordance with the ground, so an army manages its victory in accordance with the situation of the enemy.

This does not mean that the enemy is to be allowed to escape. The object is to make him believe that there is a road to safety, and thus prevent his fighting with the courage of despair. After that, you may crush him.

Hence the saying: The enlightened ruler lays his plans well ahead; the good general cultivates his resources.

Now a soldier's spirit is keenest in the morning; by noonday it has begun to flag; and in the evening, his mind is only on returning to camp.

Being unconquerable lies with yourself; being conquerable lies with your enemy.