Answer:
to persuade readers to oppose the censorship of literature
Step-by-step explanation:
From the excerpt, the author is describing his journeys and quest for knowledge while exploring and sampling different ethnic foods and learning from foreigners in different countries.
The text ends with the author saying that censorship imposes itself in his path of knowledge and is unjustifiable.
The purpose of the text is to persuade readers to oppose the censhorship of literature.