 But Alfarabi's main contribution to the Aristotelian project was a series of commentaries on the books of the Organon—many of them sadly lost—which represent the finest achievement in the study of Aristotelian logic in Arabic. His work in this area aims at the Lesser Harmony, the “project of forging a single, consistent doctrine out of the sometimes incongruent theories found in Aristotle's many treatises;” and this marks him out as clinging to a major hermeneutical commitment of late antiquity (see Wisnovsky 2003: 15, 266). The quality of Alfarabi's arguments is clear from his remaining long commentaries on  Aristotle.[8]  He is the first truly independent thinker in Arabic logic, a fact commemorated by the honorific bestowed upon him by Avicenna: the Second Teacher (after Aristotle). When Avicenna laid out his own syllogistic, he noted each point on which he differed from Alfarabi (Street 2001).