Mr. G. B. KERFERD, in C.Q. xlviii , 84 ff. writes of ‘Plato's Noble Art of Sophistry’. He suggests that Plato thought there was a ‘Noble Art’ of sophistry, other than philosophy itself; and he seeks to find this Art in the better and worse arguments of Protagoras. This suggestion is, unfortunately, based on a mistranslation of Plato, Sophist 231 a:.