 Who is Sporr and what is his authority in calling the narrator Yandro?
He was Yandro, the Stranger of the Prophecy—and he found that he was destined to fight both sides. "I am a scientist," offered Doriza, and came forward. "Surely you are Yandro, the Conquering Stranger," he said, intoning as if in formal prayer. "Pardon these short-sighted ones—deign to save us from our enemies—" The girl Doriza spoke to the officer: "If Sporr speaks truth, and he generally does, you have committed a blasphemy." "This may be Yandro, though I'm a plain soldier and follow the classics very little. If indeed he is Yandro," and he was most respectful, "he will appreciate, like a good military mind, my caution against possible impostors."
 He is a mystic in touch with the spiritual realm, in charge of prophecies.
 He is a mystic in touch with faith, in charge of the materialization of gods.  He is a mystic in touch with the spiritual realm, in charge of prophecies.  He is a mystic in touch with the material space, in charge of prophecies.  He is a mystic in touch with what is Good, in charge of the rational realm.