My favorite portion ...

of Ovid's "Orpheus and Eurydice" .... if you are not familiar with Metamporphoses, Eurydice has been stolen and assumedly going to be turned into a love slave ... Orpheus descends to hell to retrieve her ... annnd go! ...

So Orpheus then
received his wife; and Pluto told him he
might now ascend from these Avernian vales
up to the light, with his Eurydice;
90 but, if he turned his eyes to look at her,
the gift of her delivery would be lost.
They picked their way in silence up a steep
and gloomy path of darkness. There remained
but little more to climb till they would touch
95 earth's surface, when in fear he might again
lose her, and anxious for another look
at her, he turned his eyes so he could gaze
upon her. Instantly she slipped away.
He stretched out to her his despairing arms,
100 eager to rescue her, or feel her form,
but could hold nothing save the yielding air.
Dying the second time, she could not say
a word of censure of her husband's fault;
what had she to complain of -- his great love?
105 Her last word spoken was, "Farewell!" which he
could barely hear, and with no further sound
she fell from him again to Hades.

see what prevention or unnecessary precautions get you? mm.