Sextus Empiricus Pyrrhoniae Hypotyposes 2.6.55

[55] And even were one to concede that the sense- impressions of those in a natural state are reliable, and those of men in a non-natural condition unreliable, even so the judgement of external real objects by means of the senses alone will be found to be impossible. For certainly the sense of sight, even when it is in a natural state, pronounces the same tower ¹ to be at one time round, at another square; and the sense of taste declares the same food to be unpleasant in the case of those full-fed, but pleasant in the case of those who are hungry;