MENO: True.

SOCRATES: And the same may be said of temperance and quickness of
apprehension; whatever things are learned or done with sense are
profitable, but when done without sense they are hurtful?

MENO: Very true.

SOCRATES: And in general, all that the soul attempts or endures, when
under the guidance of wisdom, ends in happiness; but when she is under the
guidance of folly, in the opposite?

MENO: That appears to be true.

SOCRATES: If then virtue is a quality of the soul, and is admitted to be
profitable, it must be wisdom or prudence, since none of the things of the
soul are either profitable or hurtful in themselves, but they are all made
profitable or hurtful by the addition of wisdom or of folly; and therefore
if virtue is profitable, virtue must be a sort of wisdom or prudence?

MENO: I quite agree.

SOCRATES: And the other goods, such as wealth and the like, of which we
were just now saying that they are sometimes good and sometimes evil, do
not they also become profitable or hurtful, accordingly as the soul guides
and uses them rightly or wrongly; just as the things of the soul herself
are benefited when under the guidance of wisdom and harmed by folly?

MENO: True.