"The Golden Age" is 10,000 years in the future in our solar system, an interplanetary utopian society filled with immortal humans. Phaethon, of Radamanthus House, is attending a glorious party at his family mansion celebrating the thousand-year anniversary of the High Transcendence. There he meets an old man who accuses him of being an imposter, and then a being from Neptune who claims to be an old friend. The Neptunian tells him that essential parts...