"Would they not then, Cebes," he said, "be such things as, whatever they occupy, compel that thing not only to retain its own idea, but also that of something which is always a contrary?"
"How do you mean?"
[123]. "As we just now said. For you know, surely, that whatever things the idea of three occupies must of necessity not only be three, but also odd?"
"Certainly."
"To such a thing, then, we assert, that the idea contrary to that form which constitutes this can never come."
"It can not."
"But did the odd make it so?"
"Yes."
"And is the contrary to this the idea of the even?"
"Yes."