Sextus Empiricus Pyrrhoniae Hypotyposes 2.6.63

[63] The only remaining alternative is judgement by means of both senses and intellect. ¹ But this again is impossible; for not only do the senses not guide the intellect to apprehension, but they even oppose it. For it is certain, at any rate, that from the fact that honey appears bitter to some and sweet to others, Democritus declared that it is neither sweet nor bitter, while Heracleitus said that it is both. And the same account may be given of all the other senses and sensibles. Thus, when it starts out from the senses, the intellect is compelled to make diverse and conflicting statements; and this is alien to a criterion of apprehension.