The printing press and paper books
Answer:
"Orpheus and Eurydice" is a Greek myth in which <em> a bereaved musician named Orpheus travels to the underworld in hopes of reviving his recently deceased wife, Eurydice.</em><em> </em>Orpheus and Eurydice's marriage is doomed from the beginning.
Ummm...I think that's the oath that states the obligations and proper conduct of doctors, formerly taken by those beginning medical practice. Parts of the oath are still used in most medical schools.
