When Zeno had thus spoken, Pythodorus, according to Antiphon’s report of him, said, that he himself and Aristoteles and the whole company entreated Parmenides to give an example of the process. I cannot refuse, said Parmenides; and yet I feel rather like Ibycus, who, when in his old age, against his will, he fell in love, compared himself to an old racehorse, who was about to run in a chariot race, shaking with fear at the course he knew so well—this was his simile of himself. And I also experience a trembling when I remember through what an ocean of words I have to wade at my time of life. But I must indulge you, as Zeno says that I ought, and we are alone. Where shall I begin? And what shall be our first hypothesis, if I am to attempt this laborious pastime? Shall I begin with myself, and take my own hypothesis the one? and consider the consequences which follow on the supposition either of the being or of the not-being of one?
By all means, said Zeno.
And who will answer me? he said. Shall I propose the youngest? He will not make difficulties and will be the most likely to say what he thinks; and his answers will give me time to breathe.
I am the one whom you mean, Parmenides, said Aristoteles; for I am the youngest and at your service. Ask, and I will answer.
Parmenides proceeded: I.a. If one is, he said, the one cannot be many?
Impossible.
Then the one cannot have parts, and cannot be a whole?
Why not?
Because every part is part of a whole; is it not?
Yes.
And what is a whole? would not that of which no part is wanting be a whole?
Certainly.
Then, in either case, the one would be made up of parts; both as being a whole, and also as having parts?
To be sure.
And in either case, the one would be many, and not one?
True.
But, surely, it ought to be one and not many?
It ought.
Then, if the one is to remain one, it will not be a whole, and will not have parts?
No.
But if it has no parts, it will have neither beginning, middle, nor end; for these would of course be parts of it.
Right.
But then, again, a beginning and an end are the limits of everything?
Certainly.
Then the one, having neither beginning nor end, is unlimited?
Yes, unlimited.
And therefore formless; for it cannot partake either of round or straight.
But why?
Why, because the round is that of which all the extreme points are equidistant from the centre?
Yes.
And the straight is that of which the centre intercepts the view of the extremes?
True.
Then the one would have parts and would be many, if it partook either of a straight or of a circular form?
Assuredly.
But having no parts, it will be neither straight nor round?
Right.
And, being of such a nature, it cannot be in any place, for it cannot be either in another or in itself.
How so?
Because if it were in another, it would be encircled by that in which it was, and would touch it at many places and with many parts; but that which is one and indivisible, and does not partake of a circular nature, cannot be touched all round in many places.
Certainly not.
But if, on the other hand, one were in itself, it would also be contained by nothing else but itself;302 that is to say, if it were really in itself; for nothing can be in anything which does not contain it.
Impossible.
But then, that which contains must be other than that which is contained? for the same whole cannot do and suffer both at once; and if so, one will be no longer one, but two?
True.
Then one cannot be anywhere, either in itself or in another?
No.
Further consider, whether that which is of such a nature can have either rest or motion.
Why not?
Why, because the one, if it were moved, would be either moved in place or changed in nature; for these are the only kinds of motion.
Yes.
And the one, when it changes and ceases to be itself, cannot be any longer one.
It cannot.
It cannot therefore experience the sort of motion which is change of nature?
Clearly not.
Then can the motion of the one be in place?
Perhaps.
But if the one moved in place, must it not either move round and round in the same place, or from one place to another?
It must.
And that which moves in a circle must rest upon a centre; and that which goes round upon a centre must have parts which are different from the centre; but that which has no centre and no parts cannot possibly be carried round upon a centre?
Impossible.
But perhaps the motion of the one consists in change of place?
Perhaps so, if it moves at all.
And have we not already shown that it cannot be in anything?
Yes.
Then its coming into being in anything is still more impossible; is it not?
I do not see why.
Why, because anything which comes into being in anything, can neither as yet be in that other thing while still coming into being, nor be altogether out of it, if already coming into being in it.
Certainly not.
And therefore whatever comes into being in another must have parts, and then one part may be in, and another part out of that other; but that which has no parts can never be at one and the same time neither wholly within nor wholly without anything.
True.
And is there not a still greater impossibility in that which has no parts, and is not a whole, coming into being anywhere, since it cannot come into being either as a part or as a whole?
Clearly.
Then it does not change place by revolving in the same spot, nor by going somewhere and coming into being in something; nor again, by
