Answer: The answer is indeed "he is a doctor".
Step-by-step explanation:
In Jonathan Swift's book "Gulliver's Travels", the main character is Lemuel Gulliver. He was an apprentice of an eminent surgeon in London and attended the University of Leiden. Gulliver also educated himself in mathematics and navigation.
In his adventures, Gulliver ends up going to strange lands. Swift seems to use the people from those lands as a way of criticizing rulers and even society in general. On the land where Gulliver is a giant, for instance, the little people's egos and need to prove their authority are immense.