Abstract

This paper examines the fifth deduction (160b4-163b5) of the second part of the Parmenides and its connection with the Sophist. I argue that, far from providing us with clear formulations of arguments and theses developed in the Sophist, D5 aims to stimulate us to reflect on two main problems, which are relevant for the ontology and the theory of predication of the Sophist. First, the ontological requirements of the extra-linguistic correlates of contentful thought and meaningful speech. Second, the function of being in the mechanism of the relation of participation.