  Notice that on this view the complete use of “is” in  Greek does not correspond to existence in our modern sense: we say  that horses exist, whereas imaginary objects, such as Pegasus, do not.  On the proposed interpretation, anything describable is (exists). So  Pegasus is (exists), since we can describe him as a winged horse. On  the other hand, what-is-not is nothing at all—indescribable. It was this notion of not-being—nothing—that was responsible for the earlier puzzles about not-being in the Sophist. (For criticisms of Brown’s view, see Malcolm 2006b, and for criticisms of  Malcolm and Brown, see Leigh 2008.)