The control of a large force is the same principle as the control of a few men: it is merely a question of dividing up their numbers.

Of all rewards none [is] more liberal than those given to secret agents.

In making tactical dispositions, the highest pitch you can attain is to conceal them.

All warfare is based on deception. Therefore, when capable, feign incapacity; when active, inactivity. When near, make it appear that you are far away; when far away, that you are to lure him; feign disorder and strike him. When he concentrates, prepare against him; where he is strong, avoid him. Anger his general and confuse him. Pretend inferiority and encourage his arrogance.

Winning isn't enough. The acme of all skill is to defeat your enemy before taking the field.

When envoys are sent with compliments in their mouths, it is a sign that the enemy wishes for a truce.

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.