The Romantic period is characterized by passion and emotion being more credible and trustworthy than logic and reason. Wordsworth defines poetry as "the spontaneous overflow of powerful feelings" reflects Romanticism because it is full of feeling, not thinking. An Enlightenment definition would be something like "literary work expressing something using style and rhythm." This definition shows the importance of feelings over thinking for Wordsworth, and how reality doesn't matter in his style. Poetry was the form of choice because it lacks structure especially since most Romantics wrote in blank verse, completely devoid of structure. Poetry is meant to be an emotional art form without structure in blank verse, and Romantics preferred feeling, so lack of structure would remove an obstacle to really let emotions shine in their work.
The man represents chaos because he brings disorder into his surrounding. Nature is wonderful and more powerful than a man can ever become - it is perfect the way it is, and man is there to disturb the balance that nature has created over a long period of time. This story was written by Jack London, who's a naturalist, so it is normal that he would appreciate nature over everything else.
