“He is saved from those circular labyrinths by a curious discovery, a discovery which, however, will plunge him deep into other, yet more tangled and heterogeneous mazes: It seems that certain words spoken by a beggar who spoke with Fergus Kilpatrick on the day of his death had been prefigured by Shakespeare, in Macbeth.  The idea that history might have copied history is mind-boggling enough; that history should copy literature is inconceivable…” - Borges, The Theme of the Traitor and the Hero