Since none of the comparisons that we have formerly examined seems
to express the relation of the soul to the body, properly we might
say that the soul is in the body as the pilot is in the ship.[131]
This illustration is satisfactory in that it emphasizes the soul's
being separable from the body; but it does not properly indicate the
presence of the soul in the body. If the soul be present in the body
as a passenger in a ship, it would be there only by accident, and the
illustration is not yet satisfactory if changed to the pilot's presence
in the ship he is steering; for the pilot is not present to the whole
of the ship as the whole soul is in the body.[132] One might illustrate
the soul's presence in the body as an art inheres in its instruments;
as, for instance, in the helm, which might be supposed to be alive,
containing the power of steering the ship skilfully. This is still
unsatisfactory, because such an art comes from without. The soul might
indeed be compared to a pilot who should be incarnated in his helm; and
the soul might be in the body as in some natural instrument,[133] so
that the soul would move it at pleasure. This however might still fail
to explain the manner in which the soul would exist in her instrument.
Therefore, though the latter illustration is an improvement on the
former, we must still seek one which closer approaches reality.