μηδενί δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement on anything until you have heard a speech on both sides
Ξανθίππη: ἡ Ксантиппа (жена философа Сократа) Plat., Arst.