I do believe those are correct.
<span>Long after the world to which it belonged has vanished, a habit of thought will live on, indelibly imprinted upon a race or nation, like the footprint of some extinct beast or bird upon a piece of stone.
The word indelibly refers to the anything that is impossible to remove or forget. It is the mark that cannot be erased.</span>
Explanation:
" I was nothing but a body. Perhaps even less: a famished stomach." 52
Here we see that in just a few days Elie feels like he has lost everything. He feels he has lost hope,faith, and his will to live.