 A third treatise, called the Magna Moralia (the “Big Ethics”) is included in complete editions of Aristotle’s works, but its authorship is disputed by scholars. It ranges over topics discussed more fully in the other two works and its point of view is similar to theirs. (Why, being briefer, is it named the Magna Moralia? Because each of the two papyrus rolls into which it is divided is unusually long. Just as a big mouse can be a small animal, two big chapters can make a small book. This work was evidently named “big” with reference to its parts, not the whole.) A few authors in antiquity refer to a work with this name and attribute it to Aristotle, but it is not mentioned by several authorities, such as Cicero and Diogenes Laertius, whom we would expect to have known of it. Some scholars hold that it is Aristotle’s earliest course on ethics—perhaps his own lecture notes or those of a student; others regard it as a post-Aristotelian compilation or adaption of one or both of his genuine ethical treatises.