When quoting classical texts it's customary to reserve Roman capitals to number books, e.g. Herodotus I.1.1 means Herodotus Histories first book, first paragraph, first sentence.
Plutarch's Moralia (Ἠθικά Ethika) is a collection of 78 essays, traditionally bundled in 14 books. Each essay has its own title; labelling them with Roman numerals is confusing and, strictly speaking, incorrect. E.g. “Sayings of Spartans” (Ἀποφθέγματα Λακωνικά Apophthegmata Laconica) is indeed the sixteenth essay, but it is in book III; there is no Moralia book XVI.
This patch removes those misleading numerals.

Check for mistakes.