and to touch, which belongs to the hand, are
things operated by the man--one of which is operated by the soul
through the feet, the other through the hands. And because it is the
same soul that operates in both cases, there is only one indifferent
operation, on the part of the thing operating, which is the first
moving principle; but difference is found on the part of what is
operated. Now, as in a mere man the body is moved by the soul, and
the sensitive by the rational appetite, so in the Lord Jesus Christ
the human nature is moved and ruled by the Divine. Hence they said
that there is one indifferent operation on the part of the Godhead
operating, but divers things operated, inasmuch as the Godhead of
Christ did one thing by Itself, as to uphold all things by the word
of His power--and another thing by His human nature, as to walk in
body. Hence the Sixth Council [*Third Council of Constantinople, Act.
10] quotes the words of Severus the heretic, who said: "What things
were done and wrought by the one Christ, differ greatly; for some are
becoming to God, and some are human, as to walk bodily on the earth
is indeed human, but to give hale steps to sickly limbs, wholly
unable to walk on the ground, is becoming to God. Yet one, i.e. the
Incarnate Word, wrought one and the other--neither was this from one
nature, and that from another; nor can we justly affirm that because
there are distinct things operated there are therefore two operating
natures and forms."

But herein they were deceived, for what is moved by another has a
twofold action--one which it has from its own form--the other, which
it has inasmuch as it is moved by another; thus the operation of an
axe of itself is to cleave; but inasmuch as it is moved by the
craftsman, its operation is to make benches. Hence the operation
which belongs to a thing by its form is proper to it, nor does it
belong to the mover, except in so far as he makes use of this kind of
thing for his work: thus to heat is the proper operation of fire, but
not of a smith, except in so far as he makes use of fire for heating
iron. But the operation which belongs to the thing, as moved by
another, is not distinct from the operation of the mover; thus to
make a bench is not the work of the axe independently of the workman.
Hence, wheresoever the mover and the moved have different forms or
operative faculties, there must the operation of the mover and the
proper operation of the moved be dist