  Take for instance the impression in the case of relishes and such edibles, that this one is the corpse of a fish, and that one of a bird or a pig. And again that this Phalernian [wine] is the little juice of a bunch of grapes, and the purple-edged robe is sheep’s wool dyed by the blood of a shellfish; and in the case of things having to do with sexual union [that it is] friction of the genitals with the excretion of mucus in spasms. Such are the impressions that get at things and go right into them, so that one sees how each thing really is. (vi.13, cf. viii.21, 24)