How shall we tell an angel
From another guest?
How, from common worldly herd,
One of the blest?
Hint of suppressed halo,
Rustle of hidden wings,
Wafture of heavenly frankincense--
Which of these things?
The old Sphinx smiles so subtly:
"I give no golden rule--
Yet would I warn thee, World: treat well
Whom thou call'st fool."
--Gertrude Hall.