When Pope Benedict XVI visited the United Kingdom in September, one of the most striking images was of him sitting side by side with the Archbishop of Canterbury, trading polite speeches, on the Cosmati Pavement of Westminster Abbey. That pavement is worthy of some attention, especially if, like me, you are interested in the symbolic meaning of geometrial forms and their role in the great cathedrals of Christendom. (The following notes are abridged...
