This found no favour with Porphyry, and very justly; for it is indeed foolish to believe that souls should desire to return from that life, which cannot be very blessed unless by the assurance of its permanence, and to come back into this life, and to the pollution of corruptible bodies, as if the result of perfect purification were only to make defilement desirable. For if perfect purification effects the oblivion of all evils, and the oblivion of evils creates a desire for a body in which the soul may again be entangled with evils, then the supreme felicity will be the cause of infelicity, and the perfection of wisdom the cause of foolishness, and the purest cleansing the cause of defilement. And, however long the blessedness of the soul last, it cannot be founded on truth, if, in order to be blessed, it must be deceived. For it cannot be blessed unless it be free from fear. But, to be free from fear, it must be under the false impression that it shall be always blessed,—the false impression, for it is destined to be also at some time miserable. How, then, shall the soul rejoice in truth, whose joy is founded on falsehood? Porphyry saw this, and therefore said that the purified soul returns to the Father, that it may never more be entangled in the polluting contact with evil. The opinion, therefore, of some Platonists, that there is a necessary revolution carrying souls away and bringing them round again to the same things, is false. But, were it true, what were the advantage of knowing it? Would the Platonists presume to allege their superiority to us, because we were in this life ignorant of what they themselves were doomed to be ignorant of when perfected in purity and wisdom in another and better life, and which they must be ignorant of if they are to be blessed? If it were most absurd and foolish to say so, then certainly we must prefer Porphyry's opinion to the idea of a circulation of souls through constantly alternating happiness and misery. And if this is just, here is a Platonist emending Plato, here is a man who saw what Plato did not see, and who did not shrink from correcting so illustrious a master, but preferred truth to Plato.