 Boethius produced question commentaries on Priscian’s authoritative Latin grammar and on several of Aristotle’s works, all of them presumably composed in connection with university courses and first presented orally to his students. In addition, there are two big sophismata, which are redacted reports of university disputations, and at least three opuscula (items  20,  23, and  26  on the list below) that do not directly reflect university teaching. The majority of his attested works are no longer extant, but what remains suffices to reveal some main features of his thought.