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?