this will seem superfluous; but, when it is remembered how often we
hear of this and that object delighting the eye, or of certain sounds
charming the ear, it may not be amiss to show that such expressions
have really no meaning except as metaphors. When the senses, as the
medium of communication, have conveyed to the mind either the sounds
or images, their function ceases. So also with respect to the objects:
their end is attained, at least as to us, when the sounds or images
are thus transmitted, which, so far as they are concerned, must for
ever remain the same within as without the mind. For, where the
ultimate end is not in mere bodily sensation, neither the senses nor
the objects possess, of themselves, any productive power; of the
product that follows, the _tertium aliquid_, whether the pleasure
we feel be in a beautiful animal or in according sounds, neither the
one nor the other is really the cause, but simply the _occasion_.
It is clear, then, that the effect realized supposes of necessity
another agent, which must therefore exist only in the mind. But of
this hereafter.

If the cause of any emotion, which we seem to derive from an outward
object, were inherent exclusively in the object itself, there could
be no failure in any instance, except where the organs of sense were
either diseased or imperfect. But it is a matter of fact that they
often do fail where there is no disease or organic defect. Many of us,
perhaps, can call to mind certain individuals, whose sense of hearing
is as acute as our own, who yet can by no possibility be made to
recognize the slightest relation between the according notes of the
simplest melody; and, though they can as readily as others distinguish
the individual sounds, even to the degrees of flatness and sharpness,
the harmonic agreement is to them as mere noise. Let us suppose
ourselves present at a concert, in company with one such person and