Question

Roll on, thou deep and dark blue ocean by george gordon byron summry

Answer 1

 the ocean, beginning "Roll on, thou deep and dark blue ocean—roll!," Byron contrasts its permanence, power, and freedom with vanished civilizations: "Thy shores are empires, changed in all save thee—/ Assyria, Greece, Rome, Carthage, what are they?" The ocean remains, "Dark-heaving;—boundless, endless, and sublime—/ The image of Eternity...." 

Answer 2

The answer to this is,

 "Roll on, thou deep and dark blue ocean—roll!"

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