Until the 13th century, no proper book of Greek grammar existed, requiring scholars to apply what they knew of Latin grammar, from reading Donatus, Priscian, and Isidore of Sevilla, to ancient Greek texts. Eriugena learned enough Greek to write commentary on the texts, and it seems plausible that a grammarian like Remigius would build his understanding of the language based on the work of another. Taking all of this into account, the controversy over Remigius’s supposed plagiarism appears, to modern scholars, to be a matter of early medieval scholastic circumstance rather than intent.