 Like most thirteenth-century commentators on the Logica vetus (Boethius’s Latin translations of Porphyry’s Isagoge and Aristotle’s Categories and De interpretatione, together with Boethius’s commentaries on these texts), Simon of Faversham begins his commentary with a prologue, which treats of the subject matter of logic and the division of logic, corresponding to the division of Aristotle’s Organon into eight(!)  treatises.[4]