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:|
muscular system, in gnashing of the teeth and protrusion of the claws,
in dilated eyes and nostrils in growls; and these are weaker
forms of the actions that accompany the killing of prey."
Here we have, as I believe, the true theory of a large number
of expressions; but the chief interest and difficulty of the
subject lies in following out the wonderfully complex results.
I infer that some one (but who he is I have not been able to ascertain)
formerly advanced a nearly similar view, for Sir C. Bell says,
"It has been maintained that what are called the external signs
of passion, are only the concomitants of those voluntary movements
which the structure renders necessary." Mr. Spencer has also
Expression of Emotion in Man and Animals