καὶ νῦν
From LSJ
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
English (LSJ)
A so now, Hom., mostly to confirm a general statement by an example, e. g. Il.1.109; ὡς κ. ν. Od.1.35; κ. ν. ἦ τοι 4.151.