When the enemy's envoy's speak in humble terms, but continues his preparations, he will advance. When their language is deceptive but the enemy pretentiously advances, he will retreat. When the envoys speak in apologetic terms, he wishes a respite. When without a previous understanding the enemy asks for a truce, he is plotting. When the enemy sees an advantage but does not advance to seize it, he is fatigued.

He will win who knows how to handle both superior and inferior forces.

Being unconquerable lies with yourself; being conquerable lies with your enemy.

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

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

Kill one, terrify a thousand.

Management of many is the same as management of few. It is a matter of organization.