Sextus Empiricus Pyrrhoniae Hypotyposes 1.10.19

[19] Those who say that ‟the Sceptics abolish appearances,” or phenomena, seem to me to be unacquainted with the statements of our School. For, as we said above, we do not overthrow the affective sense- impressions ¹ which induce our assent involuntarily; and these impressions are ‟the appearances.” And when we question whether the underlying object is such as it appears, we grant the fact that it appears, and our doubt does not concern the appearance itself but the account given of that appearance,—and that is a different thing from questioning the appearance itself.