Sabato's testament, written at 86, "at the end of the road". He's 97 now and still hasn't got there.:)
I didn't know he was a renowned physicist before starting his literary career or a famous surrealist painter. I met his surrealist side in El túnel and it gave me quite a headache.
This is the kind of book you want to have in you own library and re-read it every now and then. Not only that I recommend it, but I would also include it on the compulsory reading list of every young man.