Socrates wraps up his defense by saying:
… maybe this alone is the right coin for virtue, the coin for which all things must be exchanged - thoughtfulness. Maybe this is the genuine coin for which and with which all things must be bought and sold; and maybe courage and moderation and justice and true virtue as a whole are only when accompanied by thoughtfulness, regardless of whether pleasures and terrors and all other such things are added or subtracted … and maybe moderation and justice and courage and thoughtfulness itself are nothing but a kind of purifier. (69 b-c)
Socrates demystifies “mystic rites”, “genuine hidden meaning”, “mysteries”, and “purification”. (69c-d) The practice of dying and being dead turns out to be the practice of a life of moderation and justice and courage.
Cebes breaks in:
Socrates, the rest seems to me to be beautifully put, but what you say about the soul induces a lot of distrust in human beings. They fear that the soul, once she is free of the body, is no longer anywhere, and is destroyed and perishes on that very day when a human being dies; and that as soon as she’s free of the body and departs, then, scattered like breath or smoke, she goes fluttering off and is no longer anywhere. Of course, if she could be somewhere, herself by herself, collected together and freed from those evils you went through just now, there'd be a great hope - a beautiful hope - that what you say, Socrates, is true. But this point that the soil is when the human being dies and holds onto both some power and thoughtfulness - probably stands in need of more than a little persuasive talk and assurance.(70a)
Cebes hopefulness amounts to saying that if what Socrates says, that the soul is somewhere herself by herself, is true then is true. Cebes states it in such a way that the latter follows as a conclusion from the former, but both state the same thing.
Socrates responds:
What you say is true, Cebes, but now what should we do? Or do you want us to tell a more thorough story about these things to see whether what we’re saying is likely or not?” (70a-b)
Socrates proposes telling a more thorough story in order to see if the stories he has told are likely or not. He shifts from Cebes ‘true’ to ‘likely’. He proposes to “investigate it in some such was as this”. (70c)
… do the souls of men exist in Hades when they have died, or do they not? Now there's an
ancient doctrine, which we've recalled, that they do exist in that world, entering it from this one, and that they re-enter this world and are born again from the dead; yet if this is so, if living people are born again from those who have died, surely our souls would have to exist in that world? Because they could hardly be born again, if they didn't exist; so it would be sufficient evidence for the truth of these claims, if it really became plain that living people are born from the dead and from nowhere else; but if that isn't so, some other argument would be needed.' (70c-d)
But, of course, some other argument is needed. The living come from the living. The argument that life comes from death requires a soul that does not come to be or die. Now perhaps a soul separate from the senses, a priori, might think that the living come from the dead, but our experience informs us that we are born of living parents.
Socrates now shifts from living things to beauty and ugly, just and unjust, larger and smaller. It should be noted that he mentions justice and beauty but not the good. According to the argument, doing good would result in doing bad. (70e)
In the Republic Socrates says that the Good: "provides the truth to the things known and gives the power to the one who knows". It is "the cause of the knowledge and truth". Further, "existence and being" are the result of the Good. (508e - 509b)
The argument from opposites concludes with the claim that this movement must be circular:
And similarly, my dear Cebes, if all things that partake in life were to die, but when they'd died, the dead remained in that form, and didn't come back to life, wouldn't it be quite inevitable that everything would ultimately be dead, and nothing would live? Because if the living things came to be from the other things, but the living things were to die, what could possibly prevent everything from being completely spent in being dead?' (72 b-d)
Perhaps Cebes is persuaded by this, but it assumes what is still to be proven, the continuation of the soul in death, and ignores the obvious fact of generation of life from the living.
'Yes, and besides, Socrates,' Cebes replied, 'there's also that argument you're always putting forward, that our learning is actually nothing but recollection; according to that too, if it's true, what we are now reminded of we must have learned at some former time. But that would be impossible, unless our souls existed somewhere before being born in this human form; so in this way too, it appears that the soul is something deathless.' (72e-73a)
Two points to be noted here. Socrates just went through this long argument from opposites, how life comes from death, but if the soul is deathless then it could not come to be or become again from its opposite.
Second, note the qualification: “if it is true”. Simmias does not share Cebes enthusiasm. He does not place his hope in the possibility that it might be true. He wants to be reminded of the demonstrations that it is true. There is a play here between recollection and remembering.
'One beautiful argument,' said Cebes, 'is that when people are questioned, and if the questions are well put, they state the truth about everything for themselves-and yet unless knowledge and a correct account were present within them, they'd be unable to do this; thus, if one takes them to diagrams or anything else of that sort, one has there the plainest evidence that this is so.' (73b)
He is referring to the demonstration in the Meno where a slave without any education is able to solve a complex geometric problem. Cebes mentions but seems to fail to recognize the importance of Socrates’ “well put” questions. Without them the slave would have never “recollected” the solution. The irony here should not go unnoticed. An overarching question of the dialogue is about teaching and learning. Socrates teaches him how to solve the problem and yet claims it was recollection. This is not the place to get into it, but the difference between Meno’s problem, teaching virtue to someone like Meno who is lacking in virtue and teaching someone geometry is very different. There is a sense in which virtue must already be in the soul if one is ever to be virtuous, but it is not evident that the same holds for mathematical knowledge.
Socrates breaks in:
'But if that doesn't convince you, Simmias, then see whether maybe you agree if you look at it this way. Apparently you doubt whether what is called "learning" is recollection?'
'I don't doubt it,' said Simmias; 'but I do need to undergo just what the argument is about, to be "reminded". Actually, from the way Cebes set about stating it, I do almost recall it and am nearly
convinced; but I'd like, none the less, to hear now how you set about stating it yourself.'
'I'll put it this way. We agree, I take it, that if anyone is to be reminded of a thing, he must have known that thing at some time previously.'
'Certainly.'
'Then do we also agree on this point: that whenever knowledge comes to be present in this sort of way, it is recollection?
He goes on to give an example of recollection:
'Well now, you know what happens to lovers, whenever they see a lyre or cloak or anything else their loves are accustomed to use: they recognize the lyre, and they get in their mind, don't they, the form of the boy whose lyre it is? And that is recollection. Likewise, someone seeing Simmias is often reminded of Cebes, and there'd surely be countless other such cases.'(73b-d)
There seems to be no distinction here between recollection and being reminded of something. In the example given recollection is independent of stories of death. Socrates now shifts from things perceived to “the equal itself”. (74a).
'But still, it is from those equals, different as they are from that equal, that you have thought of and got the knowledge of it?' (74c)
It is through the combination of sense and thought that we perceive that things are equal. That this is either based on or leads to recollection of “the equal itself” is questionable.
'Then we must previously have known the equal, before that time when we first, on seeing the equals, thought that all of them were striving to be like the equal but fell short of it. (75a)
All that is necessary to see how implausible this is is to consider how we learned what it means for things to be equal. But Socrates’ concern is not simply with the equal:
Because our present argument concerns the beautiful itself, and the good itself, and just and holy, no less than the equal; in fact, as I say, it concerns everything on which we set this seal, "what it is", in the questions we ask and in the answers we give. (75d)
Can the earlier argument for opposites be reconciled with “the beautiful itself”, “the good itself”, and “the just itself”? What each is itself does not allow for its opposite.
As Socrates wraps up this argument we should not overlook a difficulty that is introduced but only developed later:
Just as sure as these beings are, so also our soul is (76e)
The problem is that “the beautiful itself”, “the good itself”, and “the just itself” are each one and distinct from things we call beautiful, good, and just. If the soul is in the same way they are then “the soul itself” exists, and my soul and your soul are like the things that are beautiful, good, and just, things that admit of their opposite. Things that come to be and pass away.