 Medieval philosophical texts have as their formal sources Greek commentaries, Neoplatonic treatises, dialogues, and allegories, as well as Aristotelian treatises, and the works of Augustine. Before the formal development of universities and university curricula that dictated the established forms for writing philosophical/theological texts in the 13th century, medieval philosophical texts were written in a wide variety of forms. From the 10th to the 12th century, writers in the Christian, Jewish, and Arabic traditions composed dialogues, allegories, axiomatic works, disputations, and summae, while the 13th and 14th centuries in the Latin West were dominated by commentaries, principally on Peter Lombard’s Sentences and the works of Aristotle, various forms of the disputed question, and the summa. 