Wow, you must be the dumbest person on the face of the Earth. Greeks speak Greek, idiot.
Greek or Latin one of those
The Greeks use written language to communicate.
Greeks speak the Greek language.
The language notably absent in the literature of the Greeks and Romans is English.
Greek
Greek.
etymology
The Greeks wrote, and still write, in the Greek language unless they are using another language because they want to communicate with people who read that other language.
They speak Greek.
No, the ancient Greeks did not speak Latin. Latin was the language of the Romans, while the ancient Greeks spoke Greek.
The Oracle of Delphi, I think?
talk using their language.