Harvard Class of 2021 SCEA Applicants Discussion

Can anyone give advice to an RD applicant? I wrote an essay for Princeton using the prompt for writing about your experiences using a book quote. I like how the essay represents me and want to use it for Harvard, but is it a bad move to submit an essay that is clearly written for a different prompt? I know they have an “open-ended” option but the book quote portion is pretty obvious.