The title of a fantastic and symbolical novel by G. K. Chesterton (London 1910), in which Catholicism and atheism are opposed, first in the persons of an antiquated monk and a "Professor Lucifer", and second, in those of a Highland Catholic and a London atheist. The title, suggested by the ball on Saint Paul's Cathedral and the cross on the Westminster dome, is also the title of a caption for an editorial section of the Catholic World.