Is the intelligible (Being) then so varied and manifold? It is indeed
varied, but it is simultaneously simple; it is both one and manifold;
for reason (which is the essence of the universal Soul), is both one
and manifold. The universal (Being) is also one; though any difference
in it (in this sense, that it contains different essences), results
from its own constitution; the difference inheres in its nature, for
it could not belong to non-being. The constitution of Essence is such
as to be inseparable from unity; unity is present wherever essence is,
and the one Essence subsists in itself. It is indeed possible that an
essence which in a certain respect is separated from another essence,
is, however, entirely present with it. But there are different kinds
of presence; first, when sense-things are present with intelligible
things, at least to those to which they can be present; second, when
intelligible entities are present to each other; likewise, when the
body is present to the soul; another, when a science is present to
the soul; further, when a science is present to another science, and
both coexist in the same intelligence; last, when a body is present to
another body.