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

Birds rising in flight is a sign that the enemy is lying in ambush; when the wild animals are startled and flee he is trying to take you unaware.

All warfare is based on deception. There is no place where espionage is not used. Offer the enemy bait to lure him.

When your opponent gives you an opening, be swift as a hare.

Someone unfamiliar with the mountains and forests cannot advance [the team]. One who does not employ local guides cannot gain the advantage.

War is a matter of vital importance to the state.

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