Each factory will be making Robots of a diťferent color, a different nationality, a different tongue; that they'll all be different - as different from one another as fingerprints; that they'll no longer be able to conspire with one another; and ... we, we people will help to foster their prejudices and cultivate their mutual lack of understanding, you see? So that any given Robot, to the day of its death, right to the grave, will forever hate a Robot bearing the trademark of another factory... Thunder, we'll make Black Robots and Swedish Robots and Italian Robots and Chinese Robots, and then let someone try to drive the notion of brotherhood into the noggin of their organization...