the intelligible; intellectual deriving its plenitude from intelligible
light, and the psychical from the intellectual. And the last kind of
truth is that which is full of error and inaccuracy through sense, and
the instability of its object. For a material nature is perpetually
flowing, and is not naturally adapted to abide even for a moment.

The following beautiful description of the third kind of truth, or that
which subsists in souls, is given by Jamblichus: "Truth, as the name
implies, makest a conversion about the gods and their incorporeal energy;
but, doxastic imitation, which, as Plato says, is fabricative of images,
wanders about that which is deprived of divinity and is dark. And the
former indeed receives its perfection in intelligible and divine forms,
and real beings which have a perpetual sameness of subsistence; but the
latter looks to that which is formless, and non-being, and which has a
various subsistence; and, about this it's visive power is blunted. The
former contemplates that which is, but the latter assumes such a form as
appears to the many. Hence the former associates with intellect, and
increases the intellectual nature which we contain; but the latter, from
looking to that which always seems to be, hunts after folly and
deceives." Jamblic. apud Stob. p. 136.

The unical, [Greek: to niaion]. That which is characterized by unity.