And the straight is that of which the middle intercepts the extremes?
True.
Then the one would have parts, and would be many, whether it partook of a straight or of a round form?
Assuredly.
But having no parts, one will be neither straight nor round?
Right.
Then, being of such a nature, one cannot be in any place, for it cannot be either in another or in itself.
How is that?
Because, if one be in another, it will be encircled in that other in which it is contained, and will touch it in many places; but that which is one and indivisible, and does not partake of a circular nature, cannot be touched by a circle in many places.
Certainly not.