STRANGER: You mean by assenting to imply that he who says something must say some one thing?
THEAETETUS: Yes.
STRANGER: Some in the singular (ti) you would say is the sign of one, some in the dual (tine) of two, some in the plural (tines) of many?
THEAETETUS: Exactly.
STRANGER: Then he who says 'not something' must say absolutely nothing.
THEAETETUS: Most assuredly.
STRANGER: And as we cannot admit that a man speaks and says nothing, he who says 'not-being' does not speak at all.
THEAETETUS: The difficulty of the argument can no further go.
STRANGER: Not yet, my friend, is the time for such a word; for there still remains of all perplexities the first and greatest, touching the very foundation of the matter.
THEAETETUS: What do you mean? Do not be afraid to speak.