A clever general... avoids an army when its spirit is keen, but attacks it when it is sluggish and inclined to return. This is the art of studying moods. Disciplined and calm, he awaits the appearance of disorder and hubbub among the enemy. This is the art of retaining self-possession.

What is of the greatest importance in war is extraordinary speed: One cannot afford to neglect opportunity.

Quickness is the essence of the war.

The opportunity of defeating the enemy is provided by the enemy himself.

If you are far from the enemy, make him believe you are near.

To capture an enemies army is better than to destroy it.

Rely not on the likelihood of the enemy's not coming, but on our own readiness to receive him