Mathematics would certainly have not come into existence if one had known from the beginning that there was in nature no exactly straight line, no actual circle, no absolute magnitude.
Friedrich Nietzsche
Orion's Cold Fire
All the Secrets of the Universe and Some Really Important Stuff Too!
Crystals are found in nature and have very straight lines.
Some even have right angles: Iron Pyrite and table salt to name two.
When a poet hears about non-Euclidean geometry and relativity it sort of goes to his head. It reminds me of HP Lovecraft trying to describe “weird geometries” associated with his deep space creatures.