Sextus Empiricus Pyrrhoniae Hypotyposes 1.14.87

[87] Seeing, then, that choice and avoidance depend on pleasure and displeasure, while pleasure and displeasure depend on sensation and sense-impression, whenever some men choose the very things which are avoided by others, it is logical for us to conclude that they are also differently affected by the same things, since otherwise they would all alike have chosen or avoided the same things. But if the same objects affect men differently owing to the differences in the men, then, on this ground also, we shall reasonably be led to suspension of judgement. For while we are, no doubt, able to state what each of the underlying objects appears to be, relatively to each difference, we are incapable of explaining what it is in reality.