 In keeping with the weight he accords the subject, Ibn Rushd commented several times on each work in Aristotle’s logical Organon. Near the start of his career, he wrote a Compendium of Logic that includes Porphyry’s Isagoge and follows the usual Arabic practice of including the Rhetoric and Poetics as part of an expanded Organon (Black 1990). Later, he wrote a series of longer paraphrases of this same corpus (but treated the Isagoge separately, on the grounds that it is neither an introduction to nor even a part of logic). Toward the end of his life, he devoted one of his five long commentaries to the Posterior Analytics.