True.
But if the one neither suffers alteration, nor turns round in the same place, nor changes place, can it still be capable of motion?
Impossible.
Now that which is unmoved must surely be at rest, and that which is at rest must stand still?
Certainly.
Then the one that is not, stands still, and is also in motion?
That seems to be true.
But if it be in motion it must necessarily undergo alteration, for anything which is moved, in so far as it is moved, is no longer in the same state, but in another?
Yes.
Then the one, being moved, is altered?
Yes.
And, further, if not moved in any way, it will not be altered in any way?
No.
Then, in so far as the one that is not is moved, it is altered, but in so far as it is not moved, it is not altered?
Right.
Then the one that is not is altered and is not altered?
That is clear.
And must not that which is altered become other than it previously was, and lose its former state and be destroyed; but that which is not altered can neither come into being nor be destroyed?
Very true.
And the one that is not, being altered, becomes and is destroyed; and not being altered, neither becomes nor is destroyed; and so the one that is not becomes and is destroyed, and neither becomes nor is destroyed?
True.
II.b. And now, let us go back once more to the beginning, and see whether these or some other consequences will follow.
Let us do as you say.
If one is not, we ask what will happen in respect of one? That is the question.
Yes.