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The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from Expression of Emotion in Man and Animals by Charles Darwin: determined by the lines of connection between the nerve-cells,
with each other and with various parts of the body.
But the direction is likewise much influenced by habit;
inasmuch as nerve-force passes readily along accustomed channels.
The frantic and senseless actions of an enraged man may be attributed
in part to the undirected flow of nerve-force, and in part to the effects
of habit, for these actions often vaguely represent the act of striking.
They thus pass into gestures included under our first principle;
as when an indignant man unconsciously throws himself into a fitting
attitude for attacking his opponent, though without any intention
of making an actual attack. We see also the influence of habit
 Expression of Emotion in Man and Animals |