IV.The 18th Century .Jonathan Swift (1667-1745): His Gulliver's Travels is a great satire,touching every vice,folly,and mere weakness of mankind.In its fourth part,the human race, represented by filthy creatures called Yahoos is shown as inferior to a noble breed of thinking,talking, high-minded horses known as Houyhnhnms.(right)IV. The 18th Century • Jonathan Swift (1667-1745): His Gulliver’s Travels is a great satire, touching every vice, folly, and mere weakness of mankind. In its fourth part, the human race, represented by filthy creatures called Yahoos is shown as inferior to a noble breed of thinking, talking, high-minded horses known as Houyhnhnms. (right)