 The commentary addressed to Gedalius became an instant success and an example to imitate. Iamblichus (ca 242–325 CE) is known to have written a commentary on the Categories that closely followed this commentary, abbreviating the argument and making the overall interpretation clearer. He is also known to have amplified the Porphyrian interpretation with the help of the book that the Pythagorean Archytas wrote on the doctrine of the categories (Simplicius, In Cat. 2.9–14). The writing in question is a late forgery intended to claim Aristotle’s doctrine of the ten categories for the Pythagorean school. Iamblichus considered this forgery an authentic anticipation of Aristotle’s Categories and a vindication of his vision of philosophy as a single tradition of wisdom, starting with Pythagoras and continuing with Plato and Aristotle. Iamblichus is reported to have made use of the considerations of Archytas in the attempt to demonstrate the overall agreement between Aristotle and the Pythagorean doctrine.