Cropped up repeatedly in a famous quotation (5)
I believe the answer is:
arose
'cropped up' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for arose that I've seen before include "appeared" , "''. ... by any other name would smell as sweet'' (Romeo and Juliet)" , "Originated (from)" , "Issued" , "Became apparent" .)