весьма разумный

From LSJ

φιλοκαλοῦμέν τε γὰρ μετ' εὐτελείας καὶ φιλοσοφοῦμεν ἄνευ μαλακίας → our love of what is beautiful does not lead to extravagance; our love of the things of the mind does not makes us soft

Source

Russian > Greek

πολύβουλος, πολύφραστος, πολυγνώμων