The Spies amoungst us

"Hence the use of spies, of whom there are five classes: local spies; internal spies; converted spies; doomed spies; surviving spies.

When these five kinds are all at work, none can discover the secret system. This is called 'divine manipulation of the threads.' It is the sovereign's most precious faculty."

"The end and aim of spying in all its five varieties is knowledge of the enemy..."

"Spies are a most important element in war, because upon them depends an army's ability to move."