What hid’st thou in thy treasure-caves and cells?
  Thou hollow-sounding and mysterious main!—
Pale glistening pearls and rainbow-colored shells,
  Bright things which gleam unrecked of and in vain!—
Keep, keep thy riches, melancholy sea!
        We ask not such from thee.

Yet more, the depths have more!—what wealth untold,
  Far down,...