Full Idea
Perhaps a Greek would experience the way we have delved deeply in uncovering what is human to be an impiety against nature, a shameless act.
Gist of Idea
Greeks might see modern analysis of what is human as impious
Source
Friedrich Nietzsche (Unpublished Notebooks 1881-82 [1882], 34[01])
A Reaction
Three instances come to mind: Vesalius, Kant and Darwin. That is, anatomical dissection, deep and critical introspection, and natural selection. Human dissection was certainly a Greek taboo.
Book Reference
Nietzsche,Friedrich: 'The Joyful Science, and 1881-82 fragments (v 6)', ed/tr. Del Caro,Adrian [Stanford 2023], p.583