desire, the former resembling a raging lion, and the latter a many-headed
beast; and the whole is bounded by sense, which is nothing more than a
passive perception of things, and on this account is justly said by
Plato, to be rather passion than knowledge; since the former of these is
characterized by alertness, and the latter by energy.

Further still, in order that the union of the soul with this gross
terrestrial body may be effected in a becoming manner, two vehicles,
according to Plato, are necessary as media, one of which is ethereal, and
the other aerial, and of these, the ethereal vehicle is simple and
immaterial, but the aerial, simple and material; and this dense earthly
body is composite and material.

The soul thus subsisting as a medium between natures impartible
and such as are divided about bodies, it produces and constitutes the
latter of these; but establishes in itself the prior causes from which it
proceeds. Hence it previously receives, after the manner of an exemplar,
the natures to which it is prior as their cause; but it possesses through
participation, and as the blossoms of first natures, the causes of its
subsistence. Hence it contains in its essence immaterial forms of things
material, incorporeal of such as are corporeal, and extended of such as
are distinguished by interval. But it contains intelligibles after the
manner of an image, and receives partibly their impartible forms, such
as are uniform variously, and such as are immovable, according to a
self-motive condition. Soul therefore is all things, and is elegantly
said by Olympiodorus to be an omniform statue ([Greek: pammorphon
agalma]): for it contains such things as are first through participation,
but such as are posterior to its nature, after the manner of an exemplar.

As, too, it is always moved; and this always is not eternal, but