It is requisite, therefore, that the dianoetic power exercising itself in
these, should draw forth the principles of these from their latent
retreats, and should contemplate them not in images, but as subsisting in
herself in impartible involution.

In the next place he says, "that the man who is to be led from the cave
will more easily see what the heavens contain, and the heavens
themselves, by looking in the night to the light of the stars, and the
moon, than by day looking on the sun, and the light of the sun." By this
he signifies the contemplation of intelligibles: for the stars and their
light are imitations of intelligibles, so far as all of them partake of
the form of the sun, in the same manner as intelligibles are
characterized by the nature of the good.

After the contemplation of these, and after the eye is accustomed through
these to the light, as it is requisite in the visible region to see the
sun himself in the last place, in like manner, according to Plato, the
idea of the good must be seen the last in the intelligible region. He,
likewise divinely adds, that it is scarcely to be seen; for we can only
be conjoined with it through the intelligible, in the vestibule of which
it is beheld by the ascending soul.

In short, the cold, according to Plato, can only be restored while on
earth to the divine likeness, which she abandoned by her descent, and be
able after death to reascend to the intelligible world, by the exercise
of the cathartic and theoretic virtues; the former purifying her from the
defilements of a mortal nature, and the latter elevating her to the
vision of true being: for thus, as Plato says in the Timaeus, "the soul
becoming sane and entire, will arrive at the form of her pristine habit."
The cathartic, however, must necessarily precede the theoretic virtues;