Swift uses many personae to sketch the nature of man in Book 4 of Gulliver's travels. The problem with this is that none of the personae give us the same definition of the nature of man. First of all, there is Gulliver himself, who bases his judgments on the ways in which the Yahoos behave and the way the people from his country behave. He ties it all together at the end in his reflections. Most of all, throughout the book, we get an idea of the nature of man through Gulliver's behavior. The Yahoos cannot comment on the nature of man, however, they display it in the ways they behave and interact. Lastly, the Houyhnhnms give us some ideas on the nature of man, through their observations of the Yahoo's and Gulliver.

Swift creates the personae of the houyhnhnms as ignorant...