μήτε δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement until you have heard a speech on both sides
P. and V. λάθρα.
do a thing unconsciously: P. and V. λανθάνειν ποιῶν τι, V. λήθειν ποιῶν τι.