In the empty castle, there are no mice left to eat, and sometimes the cat is hungry. Of course, it is better to eat fish, for their goodness lasts forever, and there are ways to get to the moats and the river through the cellars, storm drains, and catacombs. Nevertheless, there is the emptiness of time. Wandering the long stone hallways and climbing the infinite towers of gray stone and gray brick, the cat collects bones, wires, old keys, magnetic coils, batteries, fragments of music boxes, and glass marbles to assemble his robotic rats. The idea first came to him when, alone and sad, he drew a face and some whiskers on a pebble with a stub of charcoal, and then battered it about as if it were a mouse. Not long after, he manufactured his first mouse and wound it up. It ran here and there, trailing its rubber tail. The cat was amused and chased it at once. Then it went on to build an army of mice out of metal scraps. The engines whirred, and drew figure 8s in the dust, and the music of the mice danced throughout the castle. Sometimes, the cat forgets, and almost breaks his jaws on the steel skin of his contraptions. One day, he should venture out of the castle and search for real prey. In the meantime, the robotic mice are beautiful, and they help him to forget the hunger, the water leaking into the cellars, the rotting galleries, the broken pillars, and the sinking foundation. And sometimes the mousecraft makes the cat forget the absence of another cat whose forehead he would touch with his own forehead, until their skulls became typewritten paper, their bodies electric eels burning with one sustained prayerful, reasoning and transcendent thought of what it means to walk in the void as phantom tigers and ethereal panthers in a dream of bones and dust.