In my view, emotion in a reader derives from reception of aclear rendering of primal human experiences: fear of death, de-sire, loss of love, celebration of being. To spark emotion, a poetmust strive to attain what Aristotle called simple clarity. The worldthat the reader apprehends through his or her senses must beclearly painted, even if that world is wholly imaginary, as, say, inmuch of the work of Wallace Stevens
Because emotions are natural to man, every person can relate in some way. Those emotions have to be expressed in a clear, understandable way. This is important so that one can apply their own emotion to the author's versatile way of describing emotion, rather than this complicated, obscure, & niche emotion only a few select feel.