STRANGER: But surely we know that no soul is voluntarily ignorant of anything?
THEAETETUS: Certainly not.
STRANGER: And what is ignorance but the aberration of a mind which is bent on truth, and in which the process of understanding is perverted?
THEAETETUS: True.
STRANGER: Then we are to regard an unintelligent soul as deformed and devoid of symmetry?
THEAETETUS: Very true.
STRANGER: Then there are these two kinds of evil in the soul—the one which is generally called vice, and is obviously a disease of the soul...
THEAETETUS: Yes.
STRANGER: And there is the other, which they call ignorance, and which, because existing only in the soul, they will not allow to be vice.
THEAETETUS: I certainly admit what I at first disputed—that there are two kinds of vice in the soul, and that we ought to consider cowardice, intemperance, and injustice to be alike forms of disease in the soul, and ignorance, of which there are all sorts of varieties, to be deformity.