If Jones should
become expert in passing pails of liquid, he would nevertheless need to
train himself anew in order to pass frozen liquid efficiently in the
form of cakes of ice. And, to particularize still more, it would be
necessary for him to learn how to pass different liquids. Water and
thick molasses in pails should not be handled alike.
Similarly the various brain centers, as passers of different sense
impressions and mental reflexes in and out, require, each of them--like
Jones--the _specific_ exercises that will develop _their several
particular_ abilities. The _individual brain unit_ (as of courage,
memory, judgment, etc.) is strengthened only by handling the in and out
business of _its_ coordinated muscles and mind center. Also, while a
particular set of muscles and coordinate mind center are strengthening
their brain center by the exercise they give _it_, they are both being
developed by the same exercise of passing along sense impressions and
thoughts to each other through the brain--like Smith and Brown.
Pages:
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123