Παντα εμοι γλωττα ελληνικη εστιν.
Panta emoi glotta hellenike estin.
All to me
tongue Greek is.
All things to me are Greek
language.
"Panta" is neuter plural, and it agrees with "estin" because, for some totally mysterious reason, Greek neuter plural subjects always take singular verbs. "Emoi" is of course the dative of ego. I put "glotta" ("glossa" in Aeolic and other dialects) in to distinguish the Greek language from Greek things in general. In Latin this would be:
OMNIA MIHI LINGVA GRAECA SVNT.