Note 4 — Chapter III · CATEGORIÆ.

Some eminent critics, Prantl and Bonitz among them, consider the treatise Categoriæ not to be the work of Aristotle. The arguments on which this opinion rests are not convincing to me; and even if they were, the treatise could not be left out of consideration, since the doctrine of the Ten Categories is indisputably Aristotelian. See Zeller, Die Phil. der Griech. ii. 2, pp. 50, 51, 2nd ed.