Now he saw almost two hundred miles of countryside, much of it sprawling world metropolis, and savored every inch of it, tried to grok it.  He was startled by the enormous size of human cities and by their bustling activity visible even from the air, so very different from the slow motion, monestary-garden pace of cities of his own people.  It seemed to him that a human city must wear out almost at once, becoming so choked with living experience that only the strongest of the Old Ones could bear to visit its deserted streets and grok in contemplation the events and emotions piled layer on endless Layer in it.  He himself had visited abandoned cities at home only on a few wonderful and dreadful occasions, and then his teachers had stopped having him do so, grokking that he was not strong enough for such experience.