Houyhnhnms and Yahoos Animal Rationale or Rationis Capax What do the Yahoos and the Houynhnmns stand for? What moral was Swift drawing from them? The answer to the second question depends on the solution of the first. One solution could be that the Yahoos represent man has he actually is, self-seeking, sensual and depraved, while the Houyhnhnms symbolize what man ought to be, unselfish, rational, cultured. In the fourth voyage, Swift presents a case study for opposing states of nature, with the Yahoos representing the argument that man is governed by his passions, seeking his own advantage, pursuing pleasures and avoiding pain, and the Houyhnhnms representing the argument that