In its second appearance, the horse comes to symbolize the inescapable brutality of nature. Its motives are mysterious and therefore terrifying—since he cannot understand why it behaves in this way, the man cannot predict its actions or control it. So, he now tries to put it out of his mind—just like his earlier impulse was to ignore and run away from his feelings of alienation. He clings to what he
thinks he knows about how horses behave, even though this knowledge doesn’t help in this case. By appearing repeatedly, the horse shows that it will not allow the man to escape confronting his own primal nature under his civilized appearance. Although he still clings to civilization, both by trying to rationalize the horse’s behavior and by worrying about the state of his suit, his survival instinct only separates him further from civilization, as represented by his muddied suit. He hasn’t yet rediscovered his primal nature, but he is on that path.