STRANGER: And if absolute motion in any point of view partook of rest, there would be no absurdity in calling motion stationary.
THEAETETUS: Quite right,—that is, on the supposition that some classes mingle with one another, and others not.
STRANGER: That such a communion of kinds is according to nature, we had already proved before we arrived at this part of our discussion.
THEAETETUS: Certainly.
STRANGER: Let us proceed, then. May we not say that motion is other than the other, having been also proved by us to be other than the same and other than rest?
THEAETETUS: That is certain.
STRANGER: Then, according to this view, motion is other and also not other?
THEAETETUS: True.
STRANGER: What is the next step? Shall we say that motion is other than the three and not other than the fourth,—for we agreed that there are five classes about and in the sphere of which we proposed to make enquiry?
THEAETETUS: Surely we cannot admit that the number is less than it appeared to be just now.