But the other movements of the same nerves
produce other effects, as the feelings of love, hate, fear, anger,
etc., as far as they are merely affections or passions of the mind;
in other words, as far as they are confused thoughts which the mind
has not from itself alone, but from its being closely joined to the
body, from which it receives impressions; for there is the widest
difference between these passions and the distinct thoughts which we
have of what ought to be loved, or chosen, or shunned, etc.,
[although these are often enough found together]. The natural
appetites, as hunger, thirst, and the others, are likewise
sensations excited in the mind by means of the nerves of the
stomach, fauces, and other parts, and are entirely different from
the will which we have to eat, drink, [and to do all that which we
think proper for the conservation of our body]; but, because this
will or appetition almost always accompanies them, they are
therefore named appetites.
CXCI. Of the external senses; and first of touch.
We commonly reckon the external senses five in number, because there
are as many different kinds of objects which move the nerves and
their organs, and an equal number of kinds of confused thoughts
excited in the soul by these emotions.
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