τίς γὰρ ἁδονᾶς ἄτερ θνατῶν βίος ποθεινὸς ἢ ποία τυραννίς; τᾶς ἄτερ οὐδὲ θεῶν ζηλωτὸς αἰών → What human life is desirable without pleasure, or what lordly power? Without it not even the life of the gods is enviable.
Celt, Kelt = Κέλτης
Celts, Kelts, Celtae = Κελτοί, οἱ, Κελταί, οἱ.
Celtic, Keltic, adj.: Κελτικός.