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 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.
8. Nothing could have been weaker than this would-be proof. It is not true that Aristotle refuted metempsychosis, or that he proved the eternity of the human kind; and after all, it is quite untrue that an actual infinity is impossible. Yet this proof passed as irresistible amongst Aristotelians, and induced in them the belief that there was a certain sublunary intelligence and that our active intellect was produced by participation in it. But others who adhered less to Aristotle went so far as to advocate a universal soul forming the ocean of all individual souls, and believed this universal soul alone capable of subsisting, whilst individual souls are born and die. According to this opinion the souls of animals are born by being separated like drops from their ocean, when they find a body which they can animate; and they die by being reunited to the ocean of souls when the body is destroyed, as streams are lost in the sea. Many even went so far as to believe that God is that universal soul, although others thought that this soul was subordinate and created. This bad doctrine is very ancient and apt to dazzle the common herd. It is expressed in these beautiful lines of Vergil (Aen., VI, v. 724):
Principio coelum ac terram camposque liquentes,
Lucentemque globum Lunae Titaniaque astra,
Spiritus intus alit, totamque infusa per artus
Mens agitat molem, et magno se corpore miscet.
Inde hominum pecudumque genus vitaeque volantum.
And again elsewhere (Georg., IV, v. 221):
Deum namque ire per omnes
Terrasque tractusque maris caelumque profundum:
Hinc pecudes, armenta, viros, genus omne ferarum,
Quemque sibi tenues nascentem arcessere vitas.
Scilicet huc reddi deinde ac resoluta referri.
9. Plato's Soul of the World has been taken in this sense by some, but there is more indication that the Stoics succumbed to that universal soul which swallows all the rest. Those who are of this opinion might be called 'Monopsychites', since according to them there is in reality only one soul that subsists. M. Bernier observes that this is an opinion almost universally accepted amongst scholars in Persia and in the States of the Grand Mogul; it appears even that it has gained a footing with the Cabalists and with the mystics. A certain German of Swabian birth, converted to Judaism some years ago, who taught under the name Moses Germanus, having adopted the dogmas of Spinoza, believed that Spinoza revived the ancient Cabala of the Hebrews. And a learned man who confuted this proselyte Jew appears to be of the same opinion. It is known that Spinoza recognizes only substance in the world, whereof individual souls are but transient modifications. Valentin Weigel, Pastor of Zschopau in Saxony, a man of wit, even of excessive wit, although people would have it that he was a visionary, was perhaps to some extent of that opinion; as was also a man known as Johann Angelus Silesius, author of certain quite pleasing little devotional verses in German, in the form of epigrams, which have just been reprinted. In general, the mystics' doctrine of deification was liable to such a sinister interpretation. Gerson already has written opposing Ruysbroek, a mystical writer, whose intention was evidently good and whose expressions are excusable. But it would be better to write in a manner that has no need of excuses: although I confess that oft-times expressions which are extravagant, and as it were poetical, have greater force to move and to persuade than correct forms of statement.
10. The annihilation of all that belongs to us in our own right, carried to great lengths by the Quietists, might equally well be veiled irreligion in certain minds, as is related, for example, concerning the Quietism of Foë, originator of a great Chinese sect. After having preached his religion for forty years, when he felt death was approaching, he declared to his disciples that he had hidden the truth from them under the veil of metaphors, and that all reduced itself to Nothingness, which he said was the first source of all things. That was still worse, so it would seem, than the opinion of the Averroists. Both of these doctrines are indefensible and even extravagant; nevertheless some moderns have made no difficulty about adopting this one and universal Soul that engulfs the rest. It has met with only too much applause amongst the so-called freethinkers, and M. de Preissac, a soldier and man of wit, who dabbled in philosophy, at one time aired it publicly in his discourses. The System of Pre-established Harmony is the one best qualified to cure this evil. For it shows that there are of necessity substances which are simple and without extension, scattered throughout all Nature; that these substances must subsist independently of every other except God; and that they are never wholly separated from organic body. Those who believe that souls capable of feeling but incapable of reason are mortal, or who maintain that none but reasoning souls can have feeling, offer a handle to the Monopsychites. For it will ever be difficult to persuade men that beasts feel nothing; and once the admission has been made that that which is capable of feeling can die, it is difficult to found upon reason a proof of the immortality of our souls.
11. I have made this short digression because it appeared to me seasonable at a time when there is only too much tendency to overthrow natural religion to its very foundations. I return then to the Averroists, who were persuaded that their dogma was proved conclusively in accordance with reason. As a result they declared that man's soul is, according to philosophy, mortal, while they protested their acquiescence in Christian theology, which declares the soul's immortality. But this distinction was held suspect, and this divorce between faith and reason was vehemently rejected by the prelates and the doctors of that time, and condemned in the last Lateran Council under Leo X. On that occasion also, scholars were urged to work for the removal of the difficulties that appeared to set theology and philosophy at variance. The doctrine of their incompatibility continued to hold its ground incognito. Pomponazzi was suspected of it, although he declared himself otherwise; and that very sect of the Averroists survived as a school. It is thought that Caesar Cremoninus, a philosopher famous in his time, was one of its mainstays. Andreas Cisalpinus, a physician (and an author of merit who came nearest after Michael Servetus to the discovery of the circulation of the blood), was accused by Nicolas Taurel (in a book entitled Alpes Caesae) of belonging to these anti-religious Peripatetics. Traces of this doctrine are found also in the Circulus Pisanus Claudii Berigardi, an author of French nationality who migrated to Italy and taught philosophy at Pisa: but especially the writings and the letters of Gabriel Naudé, as well as the Naudaeana, show that Averroism still lived on when this learned physician was in Italy. Corpuscular philosophy, introduced shortly after, appears to have extinguished this excessively Peripatetic sect, or perhaps to have been intermixed with its teaching. It may be indeed that there have been Atomists who would be inclined to teach dogmas like those of the Averroists, if circumstances so permitted: but this abuse cannot harm such good as