Symbol Analysis
At the end of the poem, the soul floats between the buildings and underneath our feet, but no one seems to notice it. The soul symbolizes something easily ignored: our conscience, something the inhabitants of this poem seem to have forgotten.
It isn't the only time the soul plays a role in the poem, though; in stanza 3, the soul is "constituted" of sordid images, which are only revealed at night. In both instances, Eliot uses imagery to illuminate the invisible and show what our souls really contain: both our conscience and our darkest impulses.