The golden threshold

From the introduction of the book:
Her desire, always, was to be "a wild free thing of the air like the birds, with a song in my heart." A spirit of too much fire in too frail a body, it was rarely that her desire was fully granted. But in Italy she found what she could not find in England, and from Italy her letters are radiant. "This Italy is made of gold," she writes from Florence, "the gold of dawn and daylight, the gold of the stars, and, now dancing in weird enchanting rhythms through this magic month of May, the gold of fireflies in the perfumed darkness—'aerial gold.' I long to catch the subtle music of their fairy dances and make a poem with a rhythm like the quick irregular wild flash of their sudden movements. Would it not be wonderful?