Recently entering the public domain, his work is considered one of the best ever:

https://www.newyorker.com/books/second-read/rediscovering-on...

In the original Portuguese:

https://public.do/memorias-postumas-de-braz-cubas/

People from outside Brazil are missing a lot for not having contact deAssis' work.

It is so hard to break the barrier that separates Brazilian literature to the outside. Fortunately Posthumous Memoirs of Brás Cuba was somewhat successful on this task after two centuries. Hope others follow.