Nothing is more difficult than the art of maneuvering for advantageous positions.

Without subtle ingenuity of mind, one cannot make certain of the truth of their reports.

Spies cannot be usefully employed without a certain intuitive sagacity.

Correct your mistake as soon as you have found it.

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.

When you know both yourself as well as your competition, you are never in danger. To know yourself and not others, gives you half a chance of winning. Knowing neither yourself or your competition puts you in a position to lose.

If a battle can not be won do not fight it.