7. A little before these changes, and before the great schism in the West that still endures, there was in Italy a sect of philosophers which disputed this conformity of faith with reason which I maintain. They were dubbed ‘Averroists’ because they were adherents of a famous Arab author, who was called the Commentator by pre-eminence, and who appeared to be the one of all his race that penetrated furthest into Aristotle’s meaning. This Commentator, extending what Greek expositors had already taught, maintained that according to Aristotle, and even according to reason (and at that time the two were considered almost identical) there was no case for the [78] immortality of the soul. Here is his reasoning. The human kind is eternal, according to Aristotle, therefore if individual souls die not, one must resort to the metempsychosis rejected by that philosopher. Or, if there are always new souls, one must admit the infinity of these souls existing from all eternity; but actual infinity is impossible, according to the doctrine of the same Aristotle. Therefore it is a necessary conclusion that the souls, that is, the forms of organic bodies, must perish with the bodies, or at least this must happen to the passive understanding that belongs to each one individually. Thus there will only remain the active understanding common to all men, which according to Aristotle comes from outside, and which must work wheresoever the organs are suitably disposed; even as the wind produces a kind of music when it is blown into properly adjusted organ pipes.