 Iamblichus’ commentary is lost, but we can form an idea of the contribution that this commentary made to the ancient debate on the Categories thanks to Dexippus. Nothing is known about Dexippus besides the fact that he was a pupil of Iamblichus. His surviving commentary provides a concise and clear presentation of the solutions offered to the aporiai leveled against Aristotle’s Categories. Dexippus opted for the question-and-answer format, which better suited his purpose to provide a brief and relatively simple summary of the exegetical results achieved by his predecessors, especially Porphyry and Iamblichus. Dexippus was not an original thinker. According to Simplicius, he added virtually nothing to the considerations of Porphyry and Iamblichus (Simplicius, In Cat. 2. 29–30).