I will leave the spiritual interpretation of the angle to Emerson, Swedenborg, or Maeterlinck.
Here is the picture of a mouth: [Illustration] Latin equivalent, the letter R.If we turn from the dictionary to the monuments, we will see that the Egyptians used all the human features in their pictures.

We do not separate the features as frequently as did that ancient people, but we conventionalize them as often.

Nine-tenths of the actors have faces as fixed as the masks of the Greek chorus: they have the hero-mask with the protruding chin, the villain-frown, the comedian-grin, the fixed innocent-girl simper.

These formulas have their place in the broad effects of Crowd Pictures and in comedies.

Then there are sudden abandonments of the mask.