But that, said I, was not the point in question. Most of your hearers will assent to the fact that there will some day be a Resurrection, and that man will be brought before the incorruptible tribunal; on account both of the Scripture proofs, and also of our previous examination of the question. But still the question remains: Is the state which we are to expect to be like the present state of the body? Because if so, then, as I was saying, men had better avoid hoping for any Resurrection at all.
For if our bodies are to be restored to life again in the same sort of condition as they are in when they cease to breathe, then all that man can look forward to in the Resurrection is an unending calamity. For what spectacle is more piteous than when in extreme old age our bodies shrivel up and change into something repulsive and hideous, with the flesh all wasted in the length of years, the skin dried up about the bones till it is all in wrinkles, the muscles in a spasmodic state from being no longer enriched with their natural moisture, and the whole body consequently shrunk, the hands on either side powerless to perform their natural work, shaken with an involuntary trembling?
What a sight again are the bodies of persons in a long consumption! They differ from bare bones only in giving the appearance of being covered with a worn-out veil of skin. What a sight too are those of persons swollen with the disease of dropsy! What words could describe the unsightly disfigurement of sufferers from leprosy? Gradually over all their limbs and organs of sensation rottenness spreads and devours them. What words could describe that of persons who have been mutilated in earthquake, battle, or by any other visitation, and live on in such a plight for a long time before their natural deaths?
Or of those who from an injury have grown up from infancy with their limbs awry! What can one say of them? What is one to think about the bodies of newborn infants who have been either exposed, or strangled, or died a natural death, if they are to be brought to life again just such as they were? Are they to continue in that infantine state? What condition could be more miserable than that? Or are they to come to the flower of their age? Well, but what sort of milk has Nature got to suckle them again with?
It comes then to this: that, if our bodies are to live again in every respect the same as before, this thing that we are expecting is simply a calamity; whereas if they are not the same, the person raised up will be another than he who died. If, for instance, a little boy was buried, but a grown man rises again, or reversely, how can we say that the dead in his very self is raised up, when he has had some one substituted for him by virtue of this difference in age? Instead of the child, one sees a grown-up man.
Instead of the old man, one sees a person in his prime. In fact, instead of the one person another entirely. The cripple is changed into the able-bodied man; the consumptive sufferer into a man whose flesh is firm; and so on of all possible cases, not to enumerate them for fear of being prolix. If, then, the body will not come to life again just such in its attributes as it was when it mingled with the earth, that dead body will not rise again; but on the contrary the earth will be formed into another man.
How, then, will the Resurrection affect myself, when instead of me some one else will come to life? Some one else, I say; for how could I recognize myself when, instead of what was once myself, I see some one not myself? It cannot really be I, unless it is in every respect the same as myself. Suppose, for instance, in this life I had in my memory the traits of some one; say he was bald, had prominent lips, a somewhat flat nose, a fair complexion, grey eyes, white hair, wrinkled skin; and then went to look for such an one, and met a young man with a fine head of hair, an aquiline nose, a dark complexion, and in all other respects quite different in his type of countenance; am I likely in seeing the latter to think of the former?
But why dwell longer on these the less forcible objections to the Resurrection, and neglect the strongest one of all? For who has not heard that human life is like a stream, moving from birth to death at a certain rate of progress, and then only ceasing from that progressive movement when it ceases also to exist? This movement indeed is not one of spacial change; our bulk never exceeds itself; but it makes this advance by means of internal alteration; and as long as this alteration is that which its name implies, it never remains at the same stage (from moment to moment); for how can that which is being altered be kept in any sameness?
The fire on the wick, as far as appearance goes, certainly seems always the same, the continuity of its movement giving it the look of being an uninterrupted and self-centred whole; but in reality it is always passing itself along and never remains the same; the moisture which is extracted by the heat is burnt up and changed into smoke the moment it has burst into flame and this alterative force effects the movement of the flame, working by itself the change of the subject-matter into smoke; just, then, as it is impossible for one who has touched that flame twice on the same place, to touch twice the very same flame (for the speed of the alteration is too quick; it does not wait for that second touch, however rapidly it may be effected; the flame is always fresh and new; it is always being produced, always transmitting itself, never remaining at one and the same place), a thing of the same kind is found to be the case with the constitution of our body.
There is influx and afflux going on in it in an alterative progress until the moment that it ceases to live; as long as it is living it has no stay; for it is either being replenished, or it is discharging in vapour, or it is being kept in motion by both of these processes combined. If, then, a particular man is not the same even as he was yesterday, but is made different by this transmutation, when so be that the Resurrection shall restore our body to life again, that single man will become a crowd of human beings, so that with his rising again there will be found the babe, the child, the boy, the youth, the man, the father, the old man, and all the intermediate persons that he once was.
But further; chastity and profligacy are both carried on in the flesh; those also who endure the most painful tortures for their religion, and those on the other hand who shrink from such, both one class and the other reveal their character in relation to fleshly sensations; how, then, can justice be done at the Judgment?
Source: On the Soul and the Resurrection (New Advent)