What are three symbols in "Rappaccini's Daughter"?

Giovanni sees
"the ruin of a marble fountain in the centre [of the garden], sculptured with rare art, but
so wofully shattered that it was impossible to trace the original design from the chaos of
remaining fragments.  The water, however, continued to gush and sparkle in to the sunbeams as
cheerfully as ever."  It inspires Giovanni with a sense that it is an "immortal
spirit," which sings its song without ceasing or taking any notice of the comings and
goings of life around it.  We might interpret this fountain and its "immortal spirit"
as symbolic of God, a God who watches the world become more and more corrupt around him and yet
does...