Canto 28 of the Inferno
I saw it, I’m sure, and I seem to see it still:
A body with no head that moved along,
moving no differently from all the rest;
he held his severed head up by it hair,
swinging it in one hand just like a lantern,
and as it looked at us it said: ‘Alas!’
Of his own self he made himself a light
and they were two in one and one in two.
How could this be? He who ordained it knows.
by Dante Alligieri
from The Inferno
translated by Mark Musa, 1971