But how do I address you? For you seem
Not to be a mortal, by your looks,
Nor does your voice sound like a human voice.
A goddess certainly! A sister of Phoebus?
Or perhaps one of the race of Nymphs?
O quam te memorem, virgo? Namque haud tibi vultus
mortalis, nec vox hominem sonat; O, dea certe
(an Phoebi soror? An nympharum sanguinis una?)
-- Vergil, Aeneid