Gregor's actions likely displays how he clings to his humanity after his transformation. I might not be right, but this is what I think is what his actions symbolize.
It is partially true that people talked the way Shakespeare had wrote. Back then people did not speak in blank verse and since it was a play their speech was exaggerated. However, it is true that people did use vocabulary like “Thy” and “Thine”.
Answer:
i too by Langston Hughes
I am the darker brother
when company comet
I too,sing America
They sent me to eat in the kitchen
And I eat well,
And grow strong
But I laugh