Protagoras said, “Man is the measure of all things, of that that is that it is and of that that is not that it is not.” How are the first seven words of this said in Greek?
No fair just putting together words from an English-Greek dictionary, which might not be the right vernacular. I don’t know any Greek except hoi polloi, hoi aristoi, Pericles and Aspasia, the gods, and the roots of English words…

Panton metron anthropos.