Today's book passage: a moving epigram by Callimachus about a poet named Herakleitos "whose poems are nightingales" escaping Hades' hand of oblivion. 
Across cultures, the nightingale's song has been seen as a metaphor for the poet's aspiration to create a melodious language which transcends human mortal speech. Because of the bird's singing at dusk, it also denotes mournfulness & the prophecy of a gentle death. [1]
Callimachus refers to Hades as the "unseen god". Etymology of Haidês-Aïdês, ᾍδης is uncertain, might derive from prefix no, a + idein "to see" signifying "Unseen One". Also he owned the (H)aidos kuneēn or "dog-skin of Hades" also known as Helm of Darkness making him invisible.
Hades is here depicted w/ closed eyes yet the black paint incision tracing around his eyes seem to be silently saying: 'you can't hide from Hades'. This ca. 400-300 BC terracotta Hades came from the Morgantina sanctuary of Demeter & Persephone in the Province of Enna, Sicily [1]
