This is what it’s like to have the word ‘home’ reduced to himself, and he doesn’t think his world can get any smaller than this. This is what it’s like to be ushered away, and all he can take with him is himself.
The owners of his new ‘home’ give him clothes to wear, food to eat and knowledge to learn, but everything’s different. The way he acts and talks is apparently ‘wrong’, and he has to relearn what he’s known to be true.
So he hides himself inside himself and deeper within, where no food, no words and no one can touch him and change him to become like everyone else in this part of the world.