Sextus Empiricus Pyrrhoniae Hypotyposes 2.22.235

[235] And as to the last class—the solecistic arguments—some declare that they are introduced absurdly, contrary to linguistic usage.

Such are the statements made by some of the Dialecticians concerning sophisms—though others indeed make other statements; and what they say may be able, perhaps, to tickle the ears of the casual hearer, superfluous though it is and the result of vain labour on their part. Probably this can be seen from what we have said already; ¹ for we have shown that truth and falsehood, according to the Dialecticians, cannot be apprehended, and that by a variety of arguments as well as by the refutation of their evidences for the validity of the syllogism, namely proof and axiomatic arguments. ²