"Anxiety is secretive. He does not trust anyone, not even his friends, Worry, Terror, Doubt and Panic … He likes to visit me late at night when I am alone and exhausted. I have never slept with him, but he kissed me on the forehead once, and I had a headache for two years …"What are the parameters involved in our understanding of quotes like the above? Here is an article from New York Times I read not too long ago about the human brain's distinct tendencies toward symbolism and metaphorical understanding, and the many ways in which this development influences our decisions and opinions. It draws on the comparison between the human mind and those of other animals, and how their differences create this distinction. A recipe of psychology, biology, and anthropology altogether well worth some thought.