And if they maintain that no one can attain to the blessedness of the world to come, unless in this life he has been indoctrinated in those cycles in which bliss and misery relieve one another, how do they avow that the more a man loves God, the more readily he attains to blessedness, -- they who teach what paralyzes love itself? For who would not be more remiss and lukewarm in his love for a person whom he thinks he shall be forced to abandon, and whose truth and wisdom he shall come to hate; and this, too, after he has quite attained to the utmost and most blissful knowledge of Him that he is capable of? Can any one be faithful in his love, even to a human friend, if he knows that he is destined to become his enemy?  God forbid that there be any truth in an opinion which threatens us with a real misery that is never to end, but is often and endlessly to be interrupted by intervals of fallacious happiness. For what happiness can be more fallacious and false than that in whose blaze of truth we yet remain ignorant that we shall be miserable, or in whose most secure citadel we yet fear that we shall be so? For if, on the one hand, we are to be ignorant of coming calamity, then our present misery is not so short-sighted for it is assured of coming bliss. If, on the other hand, the disaster that threatens is not concealed from us in the world to come, then the time of misery which is to be at last exchanged for a state of blessedness, is spent by the soul more happily than its time of happiness, which is to end in a return to misery. And thus our expectation of unhappiness is happy, but of happiness unhappy. And therefore, as we here suffer present ills, and hereafter fear ills that are imminent, it were truer to say that we shall always be miserable than that we can some time be happy.
But these things are declared to be false by the loud testimony of religion and truth; for religion truthfully promises a true blessedness, of which we shall be eternally assured, and which cannot be interrupted by any disaster. Let us therefore keep to the straight path, which is Christ, and, with Him as our Guide and Saviour, let us turn away in heart and mind from the unreal and futile cycles of the godless. Porphyry, Platonist though he was, abjured the opinion of his school, that in these cycles souls are ceaselessly passing away and returning, either being struck with the extravagance of the idea, or sobered by his knowledge of Christianity. As I mentioned in the tenth book,  he preferred saying that the soul, as it had been sent into the world that it might know evil, and be purged and delivered from it, was never again exposed to such an experience after it had once returned to the Father. And if he abjured the tenets of his school, how much more ought we Christians to abominate and avoid an opinion so unfounded and hostile to our faith? But having disposed of these cycles and escaped out of them, no necessity compels us to suppose that the human race had no beginning in time, on the ground that there is nothing new in nature which, by I know not what cycles, has not at some previous period existed, and is not hereafter to exist again. For if the soul, once delivered, as it never was before, is never to return to misery, then there happens in its experience something which never happened before; and this, indeed, something of the greatest consequence, to wit, the secure entrance into eternal felicity. And if in an immortal nature there can occur a novelty, which never has been, nor ever shall be, reproduced by any cycle, why is it disputed that the same may occur in mortal natures? If they maintain that blessedness is no new experience to the soul, but only a return to that state in which it has been eternally, then at least its deliverance from misery is something new, since, by their own showing, the misery from which it is delivered is itself, too, a new experience. And if this new experience fell out by accident, and was not embraced in the order of things appointed by Divine Providence, then where are those determinate and measured cycles in which no new thing happens, but all things are reproduced as they were before? If, however, this new experience was embraced in that providential order of nature (whether the soul was exposed to the evil of this world for the sake of discipline, or fell into it by sin), then it is possible for new things to happen which never happened before, and which yet are not extraneous to the order of nature. And if the soul is able by its own imprudence to create for itself a new misery, which was not unforeseen by the Divine Providence, but was provided for in the order of nature along with the deliverance from it, how can we, even with all the rashness of human vanity, presume to deny that God can create new things -- new to the world, but not to Him -- which He never before created, but yet foresaw from all eternity? If they say that it is indeed true that ransomed souls return no more to misery, but that even so no new thing happens, since there always have been, now are, and ever shall be a succession of ransomed souls, they must at least grant that in this case there are new souls to whom the misery and the deliverance from it are new. For if they maintain that those souls out of which new men are daily being made (from whose bodies, if they have lived wisely, they are so delivered that they never return to misery) are not new, but have existed from eternity, they must logically admit that they are infinite. For however great a finite number of souls there were, that would not have sufficed to make perpetually new men from eternity, -- men whose souls were to be eternally freed from this mortal state, and never afterwards to return to it. And our philosophers will find it hard to explain how there is an infinite number of souls in an order of nature which they require shall be finite, that it may be known by God.
And now that we have exploded these cycles which were supposed to bring back the soul at fixed periods to the same miseries, what can seem more in accordance with godly reason than to believe that it is possible for God both to create new things never before created, and in doing so, to preserve His will unaltered? But whether the number of eternally redeemed souls can be continually increased or not, let the philosophers themselves decide, who are so subtle in determining where infinity cannot be admitted. For our own part, our reasoning holds in either case. For if the number of souls can be indefinitely increased, what reason is there to deny that what had never before been created, could be created? since the number of ransomed souls never existed before, and has yet not only been once made, but will never cease to be anew coming into being. If, on the other hand, it be more suitable that the number of eternally ransomed souls be definite, and that this number will never be increased, yet this number, whatever it be, did assuredly never exist before, and it cannot increase, and reach the amount it signifies, without having some beginning; and this beginning never before existed. That this beginning, therefore, might be, the first man was created.
 Cicero has the same (de Amicitia, 16): Quonam modo quisquam amicus esse poterit, cui se putabit inimicum esse posse? He also quotes Scipio to the effect that no sentiment is more unfriendly to friendship than this, that we should love as if some day we were to hate.  C. 30.
 C. 30.