Somewhere, far below the horizon, there is a City;
  someday I shall sail to find its harbour;
by what star I shall steer, or where that seaport lies,
  I don't know;
but somehow or other through calms and storms
  and the sea-noises,
I shall voyage, until at last at some peak will arise,
telling me I am near my destination;
or I shall see, at dusk, a lighthouse, twinkling,
  momentarily, at its port.