μήτε δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement until you have heard a speech on both sides
P. and V. ἥσυχος, ἡσυχαῖος.
idle: P. and V. ἀπράγμων.