 Finally, the tenth of the matters set forth was: how many, and of what kind, are the preliminary points (kephalaia) we must articulate prior to the study of each Aristotelian treatise. They are the following: the goal (skopos), the usefulness (to chrêsimon), the reason for the title (aitia epigraphês), its place in the order of reading (taxis anagnôseôs), whether the book is a genuine work of the Philosopher (gnêsion), its division into chapters (eis kephalaia dihairesis). It may also not be inappropriate to inquire under what part of his philosophy (meros tês philosophias) the work is placed. (Simplicius, In Cat. 8.9–13, translated by M. Chase)