STRANGER: Yet, surely, motion is the same, because all things partake of

the same.

THEAETETUS: Very true.

STRANGER: Then we must admit, and not object to say, that motion is the

same and is not the same, for we do not apply the terms 'same' and 'not

the same,' in the same sense; but we call it the 'same,' in relation to

itself, because partaking of the same; and not the same, because having

communion with the other, it is thereby severed from the same, and has

become not that but other, and is therefore rightly spoken of as 'not

the same.'

THEAETETUS: To be sure.

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.

105

Sophist