Rhet gre 1417b27-28μὴ λανθανέτω δ’ ὅτι ἀναγκαῖον ἐν ταύτῃ (28) τῇ ἀμφισβητήσει μόνῃ τὸν ἕτερον εἶναι πονηρόν·
Rhys Roberts 1924 engor (4) justified, prove these facts, just as you would prove the act not to have been committed if you were maintaining that.
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