τὸ ἀγαθὸν αἱρετόν· τὸ δ' αἱρετὸν ἀρεστόν· τὸ δ' ἀρεστὸν ἐπαινετόν· τὸ δ' ἐπαινετὸν καλόν → what is good is chosen, what is chosen is approved, what is approved is admired, what is admired is beautiful
Celt, Kelt = Κέλτης
Celts, Kelts, Celtae = Κελτοί, οἱ, Κελταί, οἱ.
Celtic, Keltic, adj.: Κελτικός.