Card #c459IR // #c459Verbatim excerpt
The Prophet called the Other 'Ketterley'. Val Ketterley, the Other, does not love the House; he uses it. He wants its power, its other worlds, its prestige. He keeps Piranesi docile, feeds him tasks, withholds the truth. Two relationships to the same infinite reality: Piranesi's devotion and Ketterley's extraction.
— Source: Piranesi (Susanna Clarke)