Final answer:
The themes of 'A Voyage to Lilliput' and 'A Voyage to Brobdingnag' explore the nature of human society and the relativity of perception, using size and perspective as metaphors to satirize and examine human flaws.
Step-by-step explanation:
The themes in A Voyage to Lilliput and A Voyage to Brobdingnag, parts of Jonathan Swift's satirical novel Gulliver's Travels, contribute to the broader critique of human nature, society, and the fallibility of perception.
In Lilliput, Gulliver is a giant among small people, a situation that satirizes the pettiness and triviality of political conflicts and human egotism.
Conversely, in Brobdingnag, Gulliver's diminutive size among the giants highlights the coarseness and crudeness of humanity when viewed up close, as well as the importance of perspective in judging others.
The juxtaposition of the two voyages serves to emphasize the relativity of truth and morality, challenging assumptions and urging readers to reflect on their own society.