μηδενί δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement on anything until you have heard a speech on both sides
signātĭo: ōnis, f. signo,I a marking, signing: furtiva (crucis), Tert. ad Uxor. 2, 9.