Onemightraisethequestion，whywomandoesnotdifferfromman
inspecies，whenfemaleandmalearecontraryandtheirdifference
isacontrariety；andwhyafemaleandamaleanimalarenotdifferent
inspecies，thoughthisdifferencebelongstoanimalinvirtueof
itsownnature，andnotaspalenessordarknessdoes；both’female’