Orpheus
Orpheus can never look back at the real woman trailing behind him out of hell, the woman that anybody could see with ordinary eyes. Orpheus must keep his eyes firmly fixed on the imaginal Eurydice before him, towards whom he has struggled all his life. She is not imaginary, not at all, but realer than any mere apparency, than any momentary act of seeing. He must move always towards that perfect image of his wife, and so sustain himself and his song. If ever he turns back, that is, regresses into seeing his wife as an ordinary woman, she is lost. And he is lost.