Euripides, Fr. 638 (Polyidus)

Who knows whether living is really death

and whether death is thought to be living below?

τίς δ᾿ οἶδεν εἰ τὸ ζῆν μέν ἐστι κατθανεῖν,

τὸ κατθανεῖν δὲ ζῆν κάτω νομίζεται

Polyidus? A seer who found the son of Minos and restore him to life!