At the personal level, the terror as an organizing principle of society relies on selective terror, which means destroying one's political opposition through acts of terror directed at individuals. It derives from the Eye of God technique, which plays on primitive fears of an all-seeing cosmic Eye of God that sees into your mind. It was used in World War One by morale officers who sent pilots in small aircraft to fly over enemy camps to call out the names of individual soldiers. CIA psywar expert Ed Lansdale, Graham Greene's model for Alden Pyle in The Quiet American, used this technique in the Philippines in the early 1950s. At night a psywar team would creep into town and paint an eye (like the one that appears atop the pyramid in the Great Seal of the United States) on the wall of a house facing a suspected Communist or Communist sympathizer.