Sextus Empiricus Pyrrhoniae Hypotyposes 2.20.220

[220] If the genera exist, either they are equal in number to the species or else there is one genus common to all the species which are said to belong to it. If, then, the genera are equal in number to their species, there will no longer be a common genus to be divided into the species; while if it shall be said that the genus exists as one in all its species, then each species partakes of either the whole or a part of it. ¹ But it certainly does not partake of the whole; for it is impossible that what is one real object should be equally included in separate things in such a way as to appear as a whole in each of those things in which it is said to exist. And if it partakes of a part, then, in the first place, all the genus will not, as they suppose, accompany the species, nor will ‟man” be ‟an animal” but a part of an animal—he will be substance, for example, but neither animate nor sensitive. ²