Analysis of One Of Us Two

The day will dawn when one of us shall hearken
 In vain to hear a voice that has grown dumb.
And morns will  fade, noons pale, and shadows darken,
 While sad eyes watch for feet that never come.
One of us two must sometime face existence
 Alone with the memories that but sharpen pain.
And these sweet days shall shine back in the distance,
 Like dreams of summer dawns, in nights of rain.
One of us two, with tortured heart half broken,
 Shall read long-treasured letters through salt tears,
Shall kiss with anguished lips each cherished token,
 That speaks of these love-crowned, delicious years.
One of us two shall find all light, all beauty,
 All joy on earth, a tale for ever done;
Shall know henceforth that life means only duty.
 O God! O God! have pity on that one.