September 11 was a day of de-Enlightenment. Politics stood revealed as a veritable Walpurgis Night of the irrational. And such old, old stuff. The conflicts we now face or fear involve opposed geographical arenas, but also opposed centuries or even millennia. It is a landscape of ferocious anachronisms: nuclear jihad in the Indian subcontinent; the medieval agonism of Islam; the Bronze Age blunderings of the Middle East.