Eurydice, whose name comes from a Sanskrit word denoting the
broad-spreading blush of dawn across the sky, is a personification of
that light slain by the serpent of darkness at twilight.
Orpheus is sometimes considered as the sun, and the dawn (Eurydice)
reappears opposite the place where he disappeared; as the dawn is no
longer seen after the sun has fairly risen, the ancients said, “Orpheus
has turned round too soon to look at Eurydice, and so is parted from
the wife he loves.”