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

Do not engage an enemy more powerful than you. And if it is unavoidable and you do have to engage, then make sure you engage it on your terms, not on your enemy's terms.

The nature of war is constant change.

It is a doctrine of war not to assume the enemy will not come, but rather to rely on one's readiness to meet him; not to presume that he will not attack, but rather to make one's self invincible.

There are routes not to be followed, armies not to be attacked, citadels not to be besieged, territory not to be fought over.

Victory is reserved for those who are willing to pay its price.

Humble words and increased preparations are signs that the enemy is about to advance. Violent language and driving forward as if to the attack are signs that he will retreat.