Analysis of Sibyl

THIS is the glamour of the world antique:
The thyme-scents of Hymettus fill the air,
And in the grass narcissus-cups are fair.
The full brook wanders through the ferns to seek
The amber haunts of bees; and on the peak
Of the soft hill, against the gold-marged sky,
She stands, a dream from out the days gone by.
Entreat her not. Indeed, she will not speak!
Her eyes are full of dreams; and in her ears
There is the rustle of immortal wings;
And ever and anon the slow breeze bears
The mystic murmur of the songs she sings.
Entreat her not: she sees thee not, nor hears
Aught but the sights and sounds of bygone springs.