There are twin Gates of Sleep.
One, they say, is called the Gate of Horn
and it offers easy passage to all true shades.
The other glistens with ivory, radiant, flawless,
but through it the dead send false dreams up toward the sky.
Sunt geminae Somni portae, quarum altera fertur
Cornea, qua veris facilis datur exitus umbris,
Altera candenti perfecta nitens elephanto,
Sed falsa ad caelum mittunt insomnia Manes.
Cornea, qua veris facilis datur exitus umbris,
Altera candenti perfecta nitens elephanto,
Sed falsa ad caelum mittunt insomnia Manes.
Original text (Latin)