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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: we cannot from long habit always prevent a slight contraction of the
above-named muscles; nor indeed do we observe their contraction in ourselves,
or attempt to stop it, if slight. But the pyramidal muscles seem
to be less under the command of the will than the other related muscles;
and if they be well developed, their contraction can be checked only by
the antagonistic contraction of the central fasciae of the frontal muscle.
The result which necessarily follows, if these fasciae contract energetically,
is the oblique drawing up of the eyebrows, the puckering of their inner ends,
and the formation of rectangular furrows on the middle of the forehead.
As children and women cry much more freely than men, and as grown-up
persons of both sexes rarely weep except from mental distress, we can
 Expression of Emotion in Man and Animals |