usness, it appeals to us pleasurably or painfully
in a way that it can to no one else.

=Neural Conditions of Feeling.=--It has been seen that every conscious
state, or experience, has its affective, or feeling, tone, and also that
every experience involves the transmission of nervous energy through a
number of connected brain cells. On this basis it is thought that the
feeling side of any conscious state is conditioned by the degree of the
resistance encountered as the nervous energy is transmitted. If the
centres involved in the experience are not yet properly organized, or if
the stimulation is strong, the resistance is greater and the feeling
more intense. A new movement of the limbs in physical training, for
example, may at first prove intensely painful, because the centres
involved in the exercise are not yet organized. So also, because a very
bright light stimulates the nerves violently, it causes a painful
feeling. That morphine deadens pain is to be explained on the
assumption that it decreases nervous energy, and thus lessens the
resistance being encountered between the nervous centres affected at the
time.

=Feeling and Habit.=--That the intensity of a feeling is conditioned by
the amount of the resistance seems evident, if we note the relation of
feeling to habit. The first time the nurse-in-training attends a wounded
patient, the experience is marked by intense feeling. After a number of
such experiences, however, this feeling becomes much less. In like
manner, the child who at first finds the physical exercise painful, as
he becomes accustomed to the movements, finds the pain becoming less and
less intense. In such cases it is evident that practice, by organizing
the centres involved in the experience, decreases the resistance between
them, and thus gradually decreases the intensity of the feeling. When
finally the act becomes habitual, the nervous impulse traverses only
lower centres, and therefore all feeling and indeed all consciousness
will disappear, as happens in the habitual movements of the limbs in
walking and of the arms during walking.

CLASSES OF FEELINGS

=Sensuous Feeling.=--As already noted, while feelings vary in intensity
according to the strength of the resistance, they also differ in kind
according to the arcs traversed by the impulse. Experiencing a burn on
the hand would involve nervous impulses, or currents, other than those
involved in hearing of the death of a friend. The one