were this world an endless plain, and by sailing eastward we could for ever reach new distances, and discover sights more sweet and strange than any cyclades or islands of king solomon, then there were promise in the voyage. but in pursuit of those far mysteries we dream of, or in tormented chase of that demon phantom that, some time or other, swims before all human hearts; while chasing such over this round globe, they either lead us on in barren mazes or midway leave us whelmed.