The extract is the writer's dream about a poverty-free world and whether it is possible.
Even if every man and woman earned enough to take care of themselves and their people, natural catastrophes or misfortunes, business failures and disease would still bring in temporary poverty.
This can be seen in the lines "But even in a poverty-free world where every man and woman would earn
enough to take care of themselves and their family, there would still be
situations of temporary poverty due to a sudden catastrophe or
misfortune, a bankruptcy or business downturn leading to failure, or
some personal disease or disaster."
Even if we lived in a poverty-free world, there would always be a difference between the middle and luxury class.
But, a world without poverty would have lesser cases of disease and malnutrition, and we would be proud to live in such a world.