Don Juan 
           Canto the Fifteenth

                       X C I X.

Between two worlds life hovers like a star,
‘Twixt night and morn, upon the horizon's verge,
How little do we know that which we are!
How less what we may be! The eternal surge

Of time and tide rolls on, and bears afar
Our bubbles: as the old burst, new emerge,
Lash'd from the foam of ages; while the graves
Of empires heave but like some passing waves.