Sextus Empiricus Pyrrhoniae Hypotyposes 1.14.50

[50] Of the other sense-organs also the same account holds good. Thus, in respect of touch, how could one maintain that creatures covered with shells, with flesh, with prickles, with feathers, with scales, are all similarly affected? And as for the sense of hearing, how could we say that its perceptions are alike in animals with a very narrow auditory passage and those with a very wide one, or in animals with hairy ears and those with smooth ears? For, as regards this sense, even we ourselves find our hearing affected in one way when we have our ears plugged and in another way when we use them just as they are.