And as Browning deals little with the commonplace in human nature, so he passes by with slight concern the natural relationships into which men are born, as compared with those which they enter by passion or choice. The bond of kinship, the love between parents and children, brothers and sisters, so prolific of poetry elsewhere, is singularly rare and unimportant in Browning, to whom every other variety of the love between men and women was a kindling theme. The names of husband, of wife, of lover, vibrate for him with a poetry more thrilling than any that those names excite elsewhere in the poetry of his generation; but the mystic glory which in Blake and Wordsworth and Coleridge gathered about unconscious childhood is all but fled. Children--real children, naïve and inarticulate, like little Fortù--rarely appear in his verse, and those that do appear seem to have been first gently disengaged, like Pippa, David, Theocrite, from all the clinging filaments of Home. In its child pathos _The Pied Piper_--addressed to a child--stands all but alone among his works. His choicest and loveliest figures are lonely and unattached. Pippa, David, Pompilia, Bordello, Paracelsus, Balaustion, Mildred, Caponsacchi, have no ties of home and blood, or only such as work malignly upon their fate. Mildred has no mother, and she falls; Sordello moves like a Shelleyan shadow about his father's house; Balaustion breaks away from the ties of kindred to become a spiritual daughter of Athens; Paracelsus goes forth, glorious in the possession of "the secret of the world," which is his alone; Caponsacchi, himself sisterless and motherless, releases Pompilia from the doom inflicted on her by her parents' calculating greed; the song of Pippa releases Luigi from the nobler but yet hurtful bondage of his mother's love.